1. The supplied products meet the quality, specifications and performance requirements stipulated in the bidding documents, technical agreements and contracts in all aspects, and comply with the national metrological verification regulations, calibration specifications and industry standards. If there is any discrepancy, the transaction will be abandoned and the corresponding responsibilities will be assumed; 2. Ensure that the supplied products are new and unused, and ensure that all parts of the supplied products are original. If the supplied products have fake and shoddy or refurbished ones, one will pay ten; 3. The product quality guarantee period shall be 12 months from the date of use or 18 months after the arrival of the product, whichever comes first; 4. Responsible for the installation, commissioning and early operation of the supplied products, and conduct training for the personnel designated by the buyer; 5. About the response to the fault repair, within 2 hours of receiving the notice of the purchaser, if the need for on-site repair, technical service personnel within 48 hours to arrive at the scene and complete the repairing; 6. Guarantee to fulfill the product "three guarantees" service provisions, ensure to provide lifelong maintenance services; 7. The company promises that the price of spare parts after the warranty period is better than the market price supply; 8. The software is free upgrade for lifetime; 9. Organize users to the company headquarters (Beijing) for the training of equipment use, maintenance and related rules and regulations.