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Bldg. 50, Zheda Wangxin Yinhu Tech Park, No. 15, Fuxian Road, Fuyang Dist., Hangzhou, Zhejiang, China (Mainland)
Tunable DC (Constant Voltage) Power Supply I, -4.5V/6.3V, US $ 500 - 1000 / Unit, Physics, Brolight, BEM-5001.Source from Hangzhou Brolight Technology Ltd. on Waimaotong.com.