Beijing Huayi Tongtai Environmental Protection Technology Co., Ltd. has authorized qualifications for multiple international first-line brands and thousands of imported testing instruments and accessories; The products involve gas detectors, water quality analyzers, environmental protection testing, radiation detectors, noise meters, Gaussian meters, dust meters, noise meters, personal measuring instruments, nuclear radiation protective clothing, etc; To provide users with various high-quality and reasonably priced testing instruments. Provide customers with excellent pre-sales and after-sales services, and seek common development through friendly cooperation.