1. Specify the preferential conditions of after-sales service and the response time of warranty: arrive at the site for maintenance within 24~36 hours (48 hours outside the province) during the warranty period. After the warranty period expires, specify the routine maintenance

　　And various maintenance commitments.

　　2. The valve equipment shall be maintained free of charge for one year and the list of free spare parts within this period shall be provided. In case of damage caused by non-human factors (except for force majeure) during the free maintenance period

　　The company will timely replace and repair for free.

　　3. The equipment is required to be guaranteed for life. If the buyer entrusts our company to maintain the equipment after the free warranty period expires, our company will maintain and replace the equipment and list the maintenance items in detail

　　Rong.

　　4. Our company provides the service life of the equipment. During this period, the buyer has the right to trace the responsibility of the seller in case of major accidents (except for force majeure) that are not caused by human operation.

　　5. When some equipment stops or changes its name, our company will inform the buyer of the plan to stop or change the production in advance, so that the buyer has enough time to purchase the required spare parts; At the same time, our company provides the equipment free of charge

　　Part drawings and relevant technical parameters.

　　6. Incidental services provided by our company

　　a. Be responsible for equipment maintenance, operation and training of operation and maintenance personnel during installation and commissioning. The above services are provided free of charge.

　　b. Spare parts required: standard configuration accessories and special tools to ensure the normal operation of the equipment are included in the bid price of the whole set of equipment.

　　7. Our company will try our best to meet customers' requirements and provide after-sales service based on the principle of "taking customers' interests as the priority, thinking about what customers want and what they need".