Terms of Service

4.1 Order Placement & Confirmation

All orders must be submitted in writing via purchase order, signed sales contract, or confirmed email correspondence. An order is deemed accepted only upon KST's written confirmation (order acknowledgment). KST reserves the right to decline any order at its sole discretion without liability.

4.2 Pricing

All prices are quoted in the currency specified in the applicable quotation or contract. Prices are exclusive of applicable taxes, duties, freight, insurance, and other charges unless expressly stated otherwise. KST reserves the right to adjust prices prior to order confirmation due to raw material cost fluctuations, currency exchange variations, or other market conditions.

4.3 Payment

Standard payment terms are 30% deposit upon order confirmation, with the remaining 70% due prior to shipment, unless otherwise agreed in writing. KST accepts payment via bank wire transfer (T/T), letter of credit (L/C), or other methods as mutually agreed. All bank charges are the responsibility of the Customer.

4.4 Late Payment

Overdue payments may accrue interest at a rate of 1.5% per month (or the maximum permitted by applicable law, whichever is lower) from the due date until full settlement. KST reserves the right to suspend production or delivery of pending orders in the event of overdue payments.

4.5 Order Cancellation

Order cancellations must be submitted in writing. Cancellations accepted by KST may be subject to a cancellation fee reflecting costs already incurred, including materials procured, labor, and engineering work. Custom and specially configured orders may not be cancellable once production has commenced.

5.1 Delivery Terms

Unless otherwise agreed in writing, delivery terms are EXW (Ex Works) Dongguan, Guangdong, China, as defined by the current edition of Incoterms® published by the International Chamber of Commerce. The Customer is responsible for all freight, insurance, customs clearance, and import duties.

5.2 Delivery Timelines

Estimated delivery dates are provided in good faith and are not guaranteed unless expressly stated as firm commitments in the purchase agreement. KST shall not be liable for delays caused by factors beyond its reasonable control, including but not limited to supply chain disruptions, force majeure events, or Customer-caused delays.

5.3 Inspection Upon Receipt

The Customer must inspect all goods within seven (7) business days of receipt. Any claims for visible damage, shortages, or non-conformity must be submitted in writing within this period. Failure to notify KST within this timeframe shall constitute acceptance of the goods as delivered.

5.4 Title & Risk

Title and risk of loss or damage to goods pass to the Customer in accordance with the agreed Incoterms. Where payment terms require full payment prior to shipment, title shall not pass until payment is received in full.

6.1 Limited Warranty

KST warrants that its products will be free from material defects in materials and workmanship under normal use and conditions for a period of twelve (12) months from the date of delivery, unless a different warranty period is specified in the applicable purchase agreement or product documentation.

6.2 Warranty Coverage

The warranty covers defects arising from manufacturing processes and materials. KST's obligation under this warranty is limited, at KST's sole discretion, to repair, replacement, or refund of the defective product or component. Warranty claims must be submitted with supporting documentation including proof of purchase, description of defect, and photographic or video evidence.

6.3 Warranty Exclusions

The warranty does not cover:

• • Damage resulting from improper installation, operation, or maintenance
• • Unauthorized modifications, repairs, or disassembly
• • Normal wear and tear, consumable parts, or optical components subject to degradation
• • Damage caused by external factors including power surges, environmental conditions, or accidents
• • Use of non-approved third-party components or accessories

6.4 After-Sales Technical Support

KST provides technical support, spare parts supply, and on-site or remote maintenance services in accordance with the service agreement applicable to each product category. Response times and service levels are defined in the relevant service documentation provided at the time of purchase.

7.1 Ownership

All intellectual property rights, including patents, trademarks, trade secrets, copyrights, design rights, and proprietary technology embodied in KST products, documentation, software, and services remain the exclusive property of KST or its licensors. The purchase of products does not transfer any intellectual property rights to the Customer.

7.2 Restrictions

The Customer shall not reverse engineer, decompile, disassemble, copy, reproduce, or create derivative works based on KST products or technology. The Customer shall not remove, alter, or obscure any patent notices, trademarks, or proprietary markings on KST products.

7.3 OEM & Customization

Where KST undertakes OEM or custom development work for the Customer, the intellectual property ownership of resulting designs, specifications, and technology shall be determined by the terms of the specific OEM agreement. Absent such agreement, all newly developed intellectual property shall remain with KST.

7.4 Infringement Indemnity

KST will defend the Customer against any third-party claim that KST's standard products infringe a valid patent, provided that the Customer promptly notifies KST of such claim, grants KST control of the defense, and provides reasonable cooperation. KST's liability under this clause is subject to the limitations set forth in Section 9.

8.1 Confidential Information

"Confidential Information" means any non-public technical, commercial, financial, or operational information disclosed by either party in connection with the business relationship, including but not limited to product specifications, pricing, business strategies, customer data, and manufacturing processes.

8.2 Obligations

Each party agrees to: (i) hold the other party's Confidential Information in strict confidence; (ii) use Confidential Information solely for the purpose of the business relationship; (iii) not disclose Confidential Information to any third party without prior written consent; and (iv) limit access to Confidential Information to employees or contractors with a need to know.

8.3 Exceptions

Confidentiality obligations do not apply to information that: (i) is or becomes publicly available through no fault of the receiving party; (ii) was rightfully known to the receiving party prior to disclosure; (iii) is independently developed without use of Confidential Information; or (iv) must be disclosed by law or court order, provided reasonable prior notice is given.

8.4 Duration

Confidentiality obligations survive the termination of the business relationship for a period of five (5) years, except with respect to trade secrets, which shall be protected indefinitely.

9.1 Disclaimer of Consequential Damages

To the maximum extent permitted by applicable law, KST shall not be liable for any indirect, incidental, special, consequential, punitive, or exemplary damages, including but not limited to loss of profits, loss of revenue, loss of business opportunity, loss of data, or business interruption, arising from or related to these Terms or the use of KST products and services, even if KST has been advised of the possibility of such damages.

9.2 Aggregate Liability Cap

KST's total aggregate liability to the Customer for any and all claims arising under or in connection with these Terms shall not exceed the total amount paid by the Customer to KST for the specific product or service giving rise to the claim in the twelve (12) months preceding the event giving rise to liability.

9.3 Force Majeure

KST shall not be liable for any failure or delay in performance due to causes beyond its reasonable control, including but not limited to acts of God, natural disasters, pandemics, war, government actions, strikes, power failures, telecommunications failures, or supply chain disruptions. KST will notify the Customer promptly of any such event and make commercially reasonable efforts to mitigate its impact.

9.4 Customer Responsibility

The Customer is solely responsible for ensuring that KST products are used in accordance with applicable laws, regulations, and safety standards in the Customer's jurisdiction. KST makes no representation that its products are compliant with the regulatory requirements of any specific country unless expressly stated in the product documentation.

10.1 Governing Law

These Terms and all transactions arising thereunder shall be governed by and construed in accordance with the laws of the People's Republic of China, without regard to its conflict of law principles.

10.2 Amicable Resolution

In the event of any dispute, controversy, or claim arising out of or relating to these Terms, the parties shall first attempt to resolve the matter amicably through good-faith negotiation for a period of thirty (30) days from the date one party notifies the other in writing of the dispute.

10.3 Arbitration

If the dispute cannot be resolved through negotiation, it shall be submitted to binding arbitration administered by the China International Economic and Trade Arbitration Commission (CIETAC) in accordance with its arbitration rules in effect at the time of the dispute. The arbitration shall be conducted in Guangzhou, China, in the Chinese language, unless otherwise agreed. The arbitral award shall be final and binding upon both parties.

10.4 Injunctive Relief

Notwithstanding the foregoing, either party may seek injunctive or other equitable relief from a court of competent jurisdiction to prevent irreparable harm pending the resolution of a dispute through arbitration.

10.5 Severability

If any provision of these Terms is found to be invalid, illegal, or unenforceable, the remaining provisions shall continue in full force and effect. The invalid provision shall be modified to the minimum extent necessary to make it enforceable.