Devices with MAC addresses that start with B4-21-1D were manufactured by Beijing GuangXin Technology Co., Ltd

Device Manufacturer
Beijing GuangXin Technology Co., Ltd
Manufacturer Location
Room 313,B Bld,Horizon International Tower,Zhichun Road,6,Haidian District,Beijing City,P.R.China
Beijing 100086
Estimated Devices using B4-21-1D
16,256,250
Estimated Total Devices From Mfg
16,256,250
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