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Shenzhen Promise Testing Technology Co., Ltd. (Shenzhen Promise Testing Technology Co., Ltd. referred to as "PROMISE") was established in Shenzhen, Guangdong, is a comprehensive third-party organization integrating testing, inspection, certification and technical services. Since its establishment, the Promise testing laboratory has been guided by the principles of "fairness, justice, accuracy and rigor", and has been scientifically managed in strict accordance with the requirements of the ISO/IEC17025 testing and calibration laboratory management system. At present, it has obtained the cooperation and recognition of large institutions such as FCC, UL, TUV, PHOENIX of Germany, BV of France, SGS of Switzerland, etc. The test report has the authority and credibility.

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