1. Make planned sales contract and technical agreement.
2. After the contract comes into effect, provide the list of design, manufacture, installation, commissioning, operation and maintenance of the contract equipment to the customer in the shortest time.
3. In technical design, we will optimize the design and keep improving.
4. In the manufacturing process, we will fully cooperate to arrange drawing review, product supervision, inspection and acceptance.
5. Product manufacturing, material and product debugging and inspection shall comply with the requirements of relevant standards, and do a good job in routine item inspection, manual operation test, electrical action test, protection circuit test, etc. The parts and framework of the product shall be manufactured in strict accordance with the relevant process rules. The welding shall be even, continuous, free of false welding and missing welding, and free of welding penetration, crack, undercut, slag splashing and air hole. All welding parts must be inspected one by one. The overall dimensions of parts must meet the requirements of drawings.
6. The factory shall complete all manufacturing and inspection of the contract equipment before leaving the factory. The main contents of delivery acceptance include the witness of equipment performance test before delivery, the inspection of the integrity of the supply of traveling equipment and its accessories, spare parts, the inspection of the appearance and size of equipment, the size of installation interface, etc.
7. After the contract equipment passes the factory acceptance, the factory shall pack according to the packaging requirements of the contract and take protective measures.

Within the specified warranty period, our factory is responsible for repairing or replacing the products free of charge. After the expiration of the warranty period, we promise to provide lifelong maintenance for the equipment, regularly organize after-sales service personnel, conduct patrol visits, understand the use and maintenance of the products, and maintain the equipment. After receiving the information of the buyer's questions, our factory will reply within 1 hour, so that the user is not satisfied with the quality and the service will not stop.
Our factory establishes user account for all users, and will issue customer satisfaction rate questionnaire to users every year to investigate the use and quality of our products. Users can timely feed back their satisfaction or experience to our factory through customer satisfaction rate questionnaire. In addition, users can also timely transmit their opinions and improvement problems to our factory through the product user service processing sheet carried by our factory's service personnel. We solemnly promise not only to provide the buyer with qualified new products, but also to provide high-quality services. We will establish a convenient and quick contact service channel between the buyer and the seller, and run the after-sales service, advanced service, whole process service and life-long service throughout the whole process of the product life cycle.