Terms & Conditions

Unless otherwise expressly agreed in writing, your purchase of products is subject to the following terms and conditions:

1. Agreement Terms

1.1 General Terms. These Laboratory Chemicals Product Terms and Conditions of Sale (“Lab Chemicals Terms”) apply to our provision, and your use, of Lab Chemicals Products (defined below), provided by Fisher Scientific Company L.L.C. and/or its affiliated entities Thermo Fisher Scientific Chemicals Inc.; Acros Organics BV; Avocado Research Chemicals Limited; Fisher Scientific U.K., Ltd.; Maybridge Ltd.; and/or Fisher Scientific Korea Ltd. (individually, and collectively, referred to in these Lab Chemicals Terms as “us”, “we”, or “our” or “Thermo Fisher”). These Lab Chemicals Terms are together with our quotation (if any), Documentation (defined below), and any other applicable Supplementary Terms, comprise the agreement (“Agreement”) between you and us for your purchase, and our sale of products. Unless your order is subject to a valid, written, executed agreement between you and us, in which case such agreement applies, you agree to accept and be bound by these Lab Chemicals Terms when ordering products. The Agreement is the complete and exclusive contract between you and us with respect to your purchase and our sale of the products. We reserve the right to change these Lab Chemicals Terms at any time, and any changes we make to these Lab Chemicals Terms will apply to the Agreement between us for any order we receive after the changes are made.

1.2 Supplementary Terms. Some of our products are subject to additional software licenses, Documentation or other written contract terms that you will not find here (“Supplementary Terms”). You will find any Supplementary Terms that apply to your purchase in our quotation to you, or in literature that accompanies the product.

1.3 Lab Chemicals Terms – Specific Definitions. For purposes of these Lab Chemicals Terms, the following definitions apply.

“Documentation” means labels affixed to products or packaging; documentation, specifications, limited use label licenses and/or accompanying package inserts shipped with products; certificates of analysis or conformance made available for applicable products; and/or documentation, specifications, use guidelines or instructions available in our catalogs, on our website, or that we provide to you for applicable products.

“Lab Chemicals Product(s)” are referred to herein as “product(s)” and mean, generally, individually, and collectively, those laboratory analytical reagents or fine chemicals products sold by Thermo Fisher (as defined above) under the brand names Alfa Aesar, Acros Organics, Maybridge, Fisher Chemical, Fisher Bioreagents and/or Thermo Scientific.

“Specifications” means our current, documented specifications or designs for products in effect at the time of order acceptance and/or confirmation; or, in the case of custom products, “Specifications” means the mutually agreed upon written specifications or designs for such custom products.

1.4 Terms Conflict. If any conditions within the Agreement documents conflict with each other, we will give them the following priority: (a) the quotation; (b) any applicable Supplementary Terms; and (c) finally these Lab Chemicals Terms. We expressly reject any different terms or provisions contained in any document you provide, and if the terms and conditions in this Agreement differ from the terms of your offer, this Agreement will serve as the governing terms for our contract.

1.5 When Agreement takes Effect. The Agreement between us is created when you receive email confirmation that we have accepted your order.

2. Price

2.1 Determining Price. We may change our prices at any time without notice. Prices we quote you are valid for 30 days, unless we state otherwise in writing.

2.2 Taxes and Fees. Our product prices do not include any taxes (including VAT), duties, levies or other government fees that may apply to your order. If they apply, it will be your responsibility to pay them. If we pay them, we will add them to your invoice. If you claim any exemption, you must provide a valid, signed certificate or letter of exemption for each respective jurisdiction.

2.3 Delivery Fees; Freight Policy Current standard published delivery charges will be added to the invoice when your order indicates the freight terms are “prepay and add”. A current copy of these standard published delivery charges is available upon request. Your order may be subject to handling charges. You may request shipment by freight collect, if desired.

Certain poisonous, reactive, corrosive or other chemicals may require a barrier bag, steel can, and/or other special packaging for shipment. There will be additional charges for these packages irrespective of the special trade term used regarding prices and deliveries of the sold products. Our Customer Service Representatives will advise you of the charges at the time the order is placed. We strive to minimize these costs through efficient packaging.

3. Cancellation And Changes

Once you have placed your order, you cannot cancel or change it without our written consent.

4. Payment

4.1 Payment Terms. We will invoice you for the product price and all other charges due when we ship you the products. Unless we have agreed otherwise in writing, you will pay us within 30 days from your receipt of invoice. Each order is a separate transaction, and you may not off-set payments, including from one order against another. We reserve the right to require you to make full or partial payment in advance, or provide other security to our satisfaction, if we believe in good faith that your financial condition does not justify the payments terms otherwise specified. You will make all payments in the currency specified in our invoice to you.

4.2 Late Payment. If you are late in making payment then, without affecting our other rights you will make payment to us, upon our demand, of a late-payment charge. The late payment charge will be calculated as interest on the sums due from the payment due date until you make payment in full, at the rate of 0.5% per month, or, if less, the maximum amount allowed by law and will also include our reasonable costs of collection (including collection agency fees and attorneys’ fees). We also reserve the right to cancel or stop delivery of products in transit and withhold shipments in whole or in part if you do not pay us when due, or if you otherwise do not perform your obligations in this Agreement.

5. Delivery

Unless otherwise specified by us in writing, we will ship products to the destination you specify in your order. By agreeing to these Lab Chemicals Terms, you (i) give your consent for us to arrange for carriage for all products supplied hereunder on your behalf; and (ii) waive your right to arrange carriage or to give us any specific instructions regarding carriage. We may, in our discretion, make partial shipments and invoice each shipment separately. Our shipping dates are approximate only, and we will not be liable for any loss or damages resulting from any delay in delivery. You may not refuse delivery or otherwise be relieved of any obligations as the result of such delay. If our delivery of a product to you is delayed due to any cause within your control, we will place the delayed products in storage at your risk and expense.

6. Risk Of Loss And Title

Title to and risk of loss of the products will pass to you when the products are delivered to the destination specified in your order.

7. Returns And Shortages

7.1 Returns. Some products are not returnable, including, but not limited to, custom or special order materials, leaking or damaged chemicals, reagents past expiration date, items with missing or obliterated labels, parts or instructions, refrigerated or frozen materials and opened materials. Products which have defects that are attributable to us, shall be returnable unless such products fall within the categories described in the foregoing sentence. You shall inspect all packages immediately upon receipt. YOU SHALL NOTIFY OUR CUSTOMER SERVICE DEPARTMENT OF ANY DAMAGES, SHORTAGES OR DEFECTS WHICH IS DISCOVERABLE WITH AN UNAIDED EYE WITHIN SEVEN (7) DAYS FROM THE RECEIPT OF THE PRODUCTS AND SHALL OBTAIN A RETURN AUTHORIZATION NUMBER. YOU SHALL NOT RETURN DEFECTED OR DAMAGED PRODUCTS IF SUCH NOTIFICATION AND INSPECTION IS NOT PERFORMED WITHIN THE ABOVE PRESCRIBED TIME PERIODS. Returned shipments will not be accepted by us unless the above procedures have been followed. Final disposition of returned products will be made only after receipt and inspection of products. In the event that products are returned, the freight charges to be collected upon delivery will not be accepted by us unless previously authorized by us. Hazardous goods must be returned in compliance with all applicable Korean regulations. Material returned must be received by us on or before the Return Authorization expiration date which shall have been notified to you at the time the return authorization number is provided. We shall have the option, at our sole discretion, to replace the returned product with another conforming product or to refund the purchase price to you.

Products returned which require disposal may incur additional charges. In the event that you return the products which have no defect being attributable to us, you shall pay 20% of the purchase price for return of any of the products, in addition to air freight charges and additional expenses.

Although we use every effort to ensure that all products are manufactured to conform substantially with our specification, it is in all cases, including repeat orders, for you to ensure by tests or otherwise, that the products are fit and suitable for the purpose for which you require them in the conditions in which they will be used. We accept no liability for misuse of the products or failure by you to carry out your statutory obligations. Purity values, where quoted, are typical figures and may vary from batch to batch. Reasonable variation from purities quoted shall not be deemed to be non-conformance to specification.

8. Warranties

8.1 Limited Warranty for Lab Chemicals Products. Unless a different warranty is included in applicable Supplementary Terms or Documentation, we warrant that each product will substantially conform with our published Specifications at the time of shipment. This warranty lasts from the date we ship the product until the earlier of: (a) the product stated expiry date (if any); or (b) 90 days from the date we ship the product, in all cases as long as the product is stored in accordance with Good Laboratory Practices (GLP) and in accordance with the Specifications and Documentation. Retest dates have no effect on the warranty or warranty period for products. We reserve the right, at our sole discretion, to limit sales of products or not to sell products, notwithstanding the receipt and acceptance of an order. Notwithstanding the generality of the foregoing, we reserve the right not to deliver products to private individuals and/or to what is or may appear to be a residential address.

8.2 Exclusions. In addition to our exclusion for third party products as set out in Section 8.5 of these Lab Chemicals Terms, our warranties do not apply to (a) normal wear and tear; (b) accident, disaster or event of force majeure; (c) your misuse, fault or negligence; (d) causes external to the products such as, but not limited to, power failure or electrical power surges; (e); instruments sold to you as ‘used’ products; (f) installation, removal, use, maintenance, storage, or handling in an improper, inadequate, or unapproved manner by you or any third party (including the carrier), such as, but not limited to, failure to follow our instructions or operating guidelines, or protocols, operation outside of stated environmental or use specifications, or operation or contact with unapproved software, materials, chemicals or other products; or (g) products manufactured in accordance with specifications you gave us. ADDITIONALLY, ANY INSTALLATION, MAINTENANCE, REPAIR, SERVICE, RELOCATION OR ALTERATION TO OR OF, OR OTHER TAMPERING WITH, THE PRODUCTS PERFORMED BY ANY PERSON OR ENTITY OTHER THAN US WITHOUT OUR PRIOR WRITTEN APPROVAL, OR ANY USE OF REPLACEMENT PARTS WE HAVE NOT SUPPLIED, WILL IMMEDIATELY VOID AND CANCEL ALL WARRANTIES WITH RESPECT TO THE AFFECTED PRODUCTS.

If we determine that products for which you requested warranty services are not covered by the warranty, or if we provide repair services or replacement parts that are not covered by this warranty, you will pay or reimburse us for all costs of investigating and responding to such request at our then prevailing time and materials rates.

8.3 Limitations.

(A) OUR WARRANTIES EXTEND ONLY TO YOU, THE ORIGINAL PURCHASER AND YOU CANNOT TRANSFER THEM. OUR OBLIGATION TO REPAIR OR REPLACE A PRODUCT IS YOUR SOLE REMEDY.

(B) EXCEPT AS OTHERWISE STATED, WE DISCLAIM ALL OTHER WARRANTIES, WHETHER EXPRESS OR IMPLIED, ORAL OR WRITTEN, WITH RESPECT TO THE PRODUCTS, INCLUDING WITHOUT LIMITATION ALL IMPLIED WARRANTIES

(a) OF MERCHANTABILITY;

(b) OF FITNESS FOR ANY PARTICULAR PURPOSE; AND/ OR

8.4 Remedies. During the applicable warranty period only, for products not meeting our warranty, we agree, in our sole discretion, to repair or replace the non-conforming product and/or provide additional parts as reasonably necessary to comply with our warranty obligations, but you must first promptly notify us in writing when you discover any defect or non- conformance, and include in the notice clear details of your warranty claim. After our review, assuming we authorize the product return, we will provide you with service data and/or a Return Material Authorization (“RMA”), which may include biohazard decontamination procedures and other product-specific handling instructions that you must follow. For valid product warranty claims timely made in accordance with this Agreement, you must return the non-conforming products to us, unless we agree otherwise, and we will pay the shipping costs.

8.5 Third Party Products. We do not support or make any warranties about products manufactured or supplied by third parties that you purchase directly from us or through any of our sales channels. We expressly disclaim all warranties associated with the accuracy and/or validity of our third party manufacturer(s)’/supplier(s)’ responses, information, statements, certifications, and/or declarations (collectively, “Statements”) made about the products, and any such third party manufacturers’/suppliers’ Statements may be voided or invalidated when the product is downpacked in our facility.

9. Indemnification

9.1 Our Indemnity.

(A) Our Infringement Indemnity. We will defend and indemnify you against infringement damages finally awarded in any legal action brought by a third party against you alleging infringement of any intellectual property rights owned by third parties arising directly and solely from a product, as manufactured and provided by us to you, but always excluding use and/or combination of such product with other products or components. This infringement indemnity does not apply to (a) claims that arose based on your failure to comply with the Agreement; (b) claims that arose based on your failure to acquire any applicable additional intellectual property rights related to your use of the products (“Additional Rights”); (c) products that we made, assembled or labeled in reliance upon your instructions, specifications, or other directions; (d) your use or resale of products; (e) modifications made by you or any third party; or (f) products originating from third parties.

THIS INDEMNITY IS OUR ONLY LIABILITY TO YOU, AND, SUBJECT TO SECTION 10.4 OF THESE LAB CHEMICALS TERMS, YOUR ONLY REMEDY, FOR ANY INFRINGEMENT OR CLAIMED INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS BY OR IN CONNECTION WITH ANY PRODUCT.

(B) Conditions to Our Indemnity. As a condition to our indemnification obligations you must (a) notify us in writing, as soon as you become aware of any claim; (b) not admit any liability or take any other action in connection with the claim that could affect the defense; (c) allow us to solely control the defense or settlement of the claim; (d) give us your reasonable information, co-operation and assistance; and (e) take all reasonable steps to mitigate losses incurred, including allowing us to exercise any and all of options set out in Section 10.4 of these Lab Chemicals Terms.

9.2 Your Indemnity of Us. If a third party makes a claim against us: (1) for infringement of its intellectual property rights based on (a) our manufacture or sale of a product or custom product we make under your instructions, specifications, or other directions, or using materials that you provide to us, (b) your failure to comply with the Agreement, (c) your failure to acquire any applicable Additional Rights, or (d) your modification, use or resale of a product, and/or (2) to the extent arising from or in connection with (a) your negligence or willful misconduct, or that of your agents, employees, representatives or contractors, (b) use of a product in combination with equipment or software not supplied by us where the product itself would not be infringing, (i) our compliance with designs, specifications or instructions supplied to us by you, (ii) use of a product in an application or environment for which it was not designed, qualified or validated, or (iii) modifications of a product by anyone other than us without our prior written approval, then you will indemnify and hold us harmless from and against any and all claims, losses, damages, liabilities and expenses (including reasonable attorneys’ fees and other costs of defending and/or settling any action) that we may have to pay as a result of the claim.

10. Intellectual Property

10.1 Use Limitations. As between you and us, we exclusively own all intellectual property rights relating to our products and services. Unless we expressly state otherwise in Supplementary Terms, our sale of products to you grants you only a limited, nontransferable right under our intellectual property to use the quantity of products purchased from us for your research and development purposes. No right to transfer, distribute or resell our products or any of their components is conveyed expressly, by implication, or by estoppel. Unless expressly permitted by us in writing, you will not modify, change, remove, cover or otherwise obscure any of our brands, trade or service marks on the products. Nothing in the Agreement limits our ability to enforce our intellectual property rights.

10.2 Commercial Applications; Additional Rights. Unless we expressly state otherwise in Supplementary Terms, we give no rights to use our products in any commercial application, including manufacturing, quality control, commercial services such as reporting the results of your activities for a fee or other consideration, or in vitro diagnostic uses, ex vivo or in vivo therapeutic uses, or any type of consumption by or application to humans or animals. If you need commercial use rights in respect of our products (including the right to perform fee-for services), please contact our out-licensing department at outlicensing@thermofisher.com. Where your use of our product is outside the scope of the Agreement, it is solely your responsibility to acquire Additional Rights.

10.3 Intellectual Property Ownership. Unless otherwise specified in applicable Supplementary Terms, we exclusively own all intellectual property rights in any inventions (patentable or otherwise), discoveries, improvements, data, know-how, or other results that are conceived, developed, discovered, reduced to practice, or generated by or for us, or jointly by you and us, in relation to processes, designs and methods utilized in manufacture of a custom product. You agree to transfer and assign to us all your right, title, and interest in and to any joint intellectual property. At our request and at our expense, you will help us secure and record our rights in such intellectual property.

10.4 Intellectual Property Infringement. We want to avoid claims of intellectual property infringement. If we believe a product we have sold to you may be subject to a claim for intellectual property infringement, you must allow us (at our option) to either (a) secure for you the right to continue using the product; (b) substitute the product with another suitable product with similar functionality; or (c) tell you to return the product to us and we will refund to you the price you paid. In the case of instruments, we will take off a reasonable amount for the instrument’s use, damage or because it is now out of date or out of use.

11. Custom Products

11.1 Declining to Make or Deliver. If you ask us to manufacture a custom product, we may decline to design or manufacture that product at any stage of the process if the product is unsuitable or commercially impractical to manufacture as specified. If a custom component or material fails, we may delay or cancel a custom product’s delivery without liability to us.

11.2 Your Responsibilities. By submitting an order for a custom product, you represent and agree that you (a) have given us all information you know of regarding any biological, radiological, and chemical hazards associated with the handling, transport, exposure to, or other use of the materials you supply to us; and (b) have the requisite rights, including but not limited to any necessary intellectual property rights, to instruct manufacture of such product.

12. Limitations And Exclusions Of Liability

(A) TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, WE WILL NOT BE LIABLE UNDER ANY LEGAL THEORY (INCLUDING BUT NOT LIMITED TO CONTRACT, NEGLIGENCE, STRICT LIABILITY IN TORT OR WARRANTY OF ANY KIND) FOR ANY INDIRECT, SPECIAL, INCIDENTAL, PUNITIVE, MULTIPLE, EXEMPLARY OR CONSEQUENTIAL DAMAGES OR COSTS OF COVER, LOST PROFITS, LOST DATA, LOSS OF BUSINESS, LOSS OF GOODWILL OR LOSS OF REVENUE THAT YOU MIGHT INCUR UNDER THE AGREEMENT, OR THAT MAY ARISE FROM OR IN CONNECTION WITH OUR PRODUCTS OR SERVICES, EVEN IF WE HAD NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.

(B) IN ADDITION, OUR MAXIMUM AGGREGATE LIABILITY ARISING OUT OF OR IN CONNECTION WITH THE AGREEMENT, OR ANY PRODUCT UNIT OR SERVICE, IS LIMITED TO THE AMOUNT YOU PAID TO US FOR THE SPECIFIC PRODUCT PURCHASED THAT GAVE RISE TO THE LIABILITY.

(C) THE PROVISIONS ABOVE IN THIS SECTION 12 DO NOT LIMIT OUR LIABILITY THAT CANNOT BE LIMITED BY LAW, INCLUDING BUT NOT LIMITED TO LIABILITY FOR FRAUD AND DEATH OR PERSONAL INJURY CAUSED BY OUR NEGLIGENCE.

13. Export Restrictions

13.1 Items. You acknowledge that each product and any related software and technology, including technical information we supply you, including those contained in product documents (collectively “Items”), is subject to U.S., EU and local government export controls.

13.2 Export Controls. The export controls may include, among others, those of the Export Administration Regulations of the U.S. Department of Commerce (the “EAR”), which may restrict or require licenses for the export of Items from the United States and their re-export from other countries.

13.3 Compliance Requirements. You must comply with the EAR, and all other applicable laws, regulations, treaties, and agreements relating to the export, re-export, and import of any Item. You must not, directly or indirectly, without first obtaining the required license to do so from the appropriate U.S. government agency; (a) export, re-export, distribute or supply any Item to (a) any restricted or embargoed country or to a person or entity whose privilege to participate in exports has been denied or restricted by the U.S. government; (b) any person or entity who is involved in improper development or use of nuclear weapons or of chemicals/biological weapons, or missiles, or in terrorist activities. You will, if we request, provide information on the end user and end use of any Item you export or plan to export.

13.4 Audit Cooperation. You will cooperate fully with us in any official or unofficial audit or inspection related to applicable export or import control laws or regulations, and will indemnify and hold us harmless from, or in connection with, your or your consultants’, agents’ or employees’ violation of this Section 13.

14. Miscellaneous

14.1 No Assignment. You may not delegate any duties nor assign any rights or claims hereunder without our prior written consent, and any such attempted delegation or assignment will be void.

14.2 Governing Law. The Agreement and performance under it will be governed by the laws of the Republic of Korea Any action arising under the Agreement must be brought within one year from the date that the cause of action arose.

14.3 Use Restrictions and Compliance. In the absence of any intended use statement in the Documentation or other Supplementary Terms associated with a product(s), which will control, product(s) are for research and development use only. Products are not for direct administration to humans or animals, and are not intended, labeled or sold for diagnostic or therapeutic use. Products are packaged/re-packaged under current good manufacturing practices as defined by ISO 9001:2015. However, these products are not manufactured, packaged/re-packaged in accordance with pharmaceutical (21 CFR 210 and 211, ICH Q7/Q10), biologic (21 CFR 600-680), or medical device (21 CFR 820, ISO 13485:2016) quality management system requirements and are not intended to be used as excipients, active pharmaceutical ingredients, or medical devices. Products are not specifically tested during our production, filling, or packaging/re-packaging process to guarantee absence of impurities in our solvents, reagents, catalyst, raw materials, equipment or packaging materials.

In addition to the restrictions set out in this Section and in Section 10 of these Terms: (a) you must use our products in accordance with our instructions; (b) you must obtain all necessary approvals and permissions you may need; (c)you must comply with all applicable foreign, federal, state, local and environmental laws, ordinances and regulations, including, but not limited to, controlled substances (as defined by local regulations or laws, as applicable) and (d) it is solely your responsibility to make sure the products are suitable for your particular use.

14.4 Uncontrollable Circumstances. We will not be responsible or liable for failing to perform our obligations under the Agreement to the extent caused by circumstances beyond our reasonable control. In certain situations, we may use our reasonable judgment and apportion products then available for delivery fairly among our customers.

14.5 No Waiver; Invalidity. Our failure to exercise any rights under the Agreement is not a waiver of our rights to damages for your breach of contract and is not a waiver of any subsequent breach. If any provision or part of the Agreement is found by any court of competent jurisdiction to be invalid or unenforceable, such invalidity or unenforceability will not affect the other provisions of the Agreement. No person other than you or us will have any rights under the Agreement.

14.6 Headings. Headings are for convenience only and shall not be used in the interpretation of these Lab Chemical Terms.

14.7 Confidentiality. You agree to keep confidential any non-public technical information, commercial information (including prices, without limitation) or instructions (including any gene sequences, oligo types or sequences) received from us as a result of discussions, negotiations and other communications between us in relation to our products or services.

14.8 Notices. Any notice or communication required or permitted under these Lab Chemicals Terms must be in writing and will be deemed received when personally delivered, or 3 business days after being sent by certified mail, postage prepaid, to a party’s specified address

14.9 Requirement to Reduce to Writing. No waiver, consent, modification, amendment or changes to the terms of the Agreement will be binding unless in writing and signed by both of us. Our failure to object to terms contained in any subsequent communication from you will not be a waiver or modification of our Agreement.

14.10 Severability. Any provision of the Agreement which is prohibited or which is held to be void or unenforceable shall be ineffective only to the extent of such prohibition or unenforceability without invalidating the remaining provisions hereof.

15. Force Majeure

We shall not be liable to you or be deemed to be in breach of this Agreement by reason of any delay in performing, or any failure to perform, any of our obligations in relation to the products , if the delay or failure was due to any cause beyond our reasonable control. Without prejudice to the generality of the foregoing, the following shall be regarded as causes beyond our reasonable control:

act of God, explosion, flood, tempest, fire or accident;

war or threat of war, sabotage, insurrection, civil disturbance or requisition;

acts, restrictions, regulations, bye-laws, prohibitions or measures of any kind on the part of any governmental, parliamentary or local authority;

import or export regulations, embargoes and/or sanctions (whether UN, EU and/or US sanctions or otherwise);

strikes, lock-outs or other industrial actions or trade disputes (whether involving our employees or those of a third party);

pandemic, epidemic;

difficulties in obtaining raw materials, labour, fuel, parts or machinery;

power failure or breakdown in machinery.

16. Technical Service

At your request, we may furnish technical assistance and information with respect to products sold. Unless otherwise agreed, all such technical assistance and information will be provided without any representation or warranty, and you, as the user, assume sole responsibility for results obtained in relying on this information. We make no warranties of any kind or nature with respect to technical assistance or information provided. Any suggestions by you regarding use, application, or suitability of the products shall not be construed as an express or implied warranty.

17. Language

These Lab Chemical Terms are executed in the Korean language and an English version is prepared and attached for reference purposes only. The Korean version shall be the binding version.