Devices with MAC addresses that start with 50-02-91 were manufactured by Espressif Inc.

Device Manufacturer
Espressif Inc.

Manufacturer Location
Room 204, Building 2, 690 Bibo Rd, Pudong New Area
Shanghai Shanghai 201203

Estimated Devices using 50-02-91
16,256,250

Estimated Total Devices From Mfg
520,200,000