Solution: Check the product specification to determine whether the lamp is matched; whether the lamp is connected to the ballast correctly;

Solution: Check whether the power supply has electricity and whether the voltage is consistent with the nominal voltage of the ballast; check whether the power cord is wired correctly;

For users who deliver goods to their homes, please check and accept the goods according to the delivery order on the spot when you receive them. If the goods are missing, damaged, incomplete and wrong, please point them out on the spot and call customer service, and we will re-deliver them free of charge. Otherwise, once the problem is found after signing for it, you need to call our company to explain the reason first, and we can send the product back after obtaining our permission. The resulting transportation costs need to be borne by ourselves, and we will re-distribute the goods free of charge after receiving the goods you send back. For products after more than 15 working days, if parts are missing, damaged, lost, etc., the company headquarters will not be replenished and returned free of charge.

Products not sold and produced by our company; Failure to show valid purchase certificates; Products disassembled and repaired without the consent of our company; Products beyond the quality guarantee period; Products unilaterally selected by customers; Products damaged by customers during delivery; Products damaged by irresistible factors and natural factors, such as typhoon, ultra-high voltage, earthquake, environmental humidity, etc;

· Provide 7*8-hour telephone support and consulting services; · Provide written technical support documents such as "Installation and Use of Work Instructions.

Warranty period: two years (the highest temperature of the shell during use shall not exceed 70 ℃); Definition of warranty period: the company calculates the warranty date based on the date of valid purchase certificate; If the customer cannot provide a valid purchase certificate, the warranty date shall be calculated according to the production date plus the 3-month channel circulation time. Within 30 days from the date of delivery, if it is found that it does not meet the ordering standards or requirements and has not been used, the company can give the replacement; · product quality problems during the warranty period, after debugging, maintenance is invalid, the company provides free replacement;