Devices with MAC addresses that start with A4-9F-89 were manufactured by Shanghai Rui Rui Communication Technology Co.Ltd.

Device Manufacturer
Shanghai Rui Rui Communication Technology Co.Ltd.
Manufacturer Location
Room 1130,Building No.1
ShangHai 201199
Estimated Devices using A4-9F-89
16,256,250
Estimated Total Devices From Mfg
16,256,250
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