Beijing Kaixing Demao Instrument Equipment Co., Ltd. is located in Tongzhou District, Beijing, with a superior geographical location and convenient transportation. After sales service commitment: 1. The warranty period for all products sold by our factory is one year (excluding faults or damages caused by human factors or uncontrollable natural phenomena). When users experience performance failures during normal use, our company promises the above warranty services. In addition, if there are clear provisions in the applicable laws and regulations of the country, our company will comply with the relevant laws and regulations. 2、 During the warranty period, paid maintenance services will be provided for the following situations:; (1) Damage caused by human or uncontrollable natural phenomena; (2) Malfunctions or damages caused by improper operation; (3) Malfunctions or damages that occur due to modifications, disassembly, or assembly of the product. 3、 After signing the contract, ensure quality and quantity, and deliver on time; 4、 Our company ensures that the equipment provided meets the contract specifications during debugging. If the system acceptance is not qualified due to the quality of our company's products or installation quality issues, our company will promptly rectify until it is qualified. The expenses incurred during this period will be borne by our factory. 5、 Provide answers to technical inquiries from the demand side at any time. Users can consult technical issues through after-sales telephone and obtain clear solutions. 6、 When delivering the equipment, our company shall provide the following documents to the purchaser: shipping list, product certificate of conformity, product user manual, and technical data; When receiving a letter or phone call from a user regarding quality issues, we guarantee to respond within 24 hours.