Recently, entrusted by the General Administration of quality supervision, inspection and Quarantine of the people's Republic of China, the national traffic safety facilities quality inspection and Testing Center conducted a product quality supervision and spot check on wthd-ry-3k-40k remote power supply - remote machine, local machine and other series products produced by Shenzhen xutu Hongda Industrial Co., Ltd., and the inspection results were qualified. After testing, its environmental temperature resistance, environmental temperature resistance, salt spray corrosion resistance, protection grade and other technical indicators comply with the relevant provisions of jt/t 817-2011 general technical requirements and testing methods for highway electromechanical system equipment. Through this test result table, the product quality of the remote power supply series products produced by Shenzhen xutu Hongda Industrial Co., Ltd. is stable, reliable and trustworthy.