Devices with MAC addresses that start with 40-F4-20 were manufactured by SICHUAN TIANYI COMHEART TELECOMCO.,LTD

Device Manufacturer
SICHUAN TIANYI COMHEART TELECOMCO.,LTD

Manufacturer Location
FL12,TowerB,Tianyi international Hotel,No.2 West Section One, Second Ring Road,
Chengdu Sichuan 610000

Estimated Devices using 40-F4-20
16,256,250

Estimated Total Devices From Mfg
227,587,500