Development History Development History

KEYGMA is the leading manufacturer of residential and commercial Ground Fault Circuit Interrupters (GFCIs) in the electrical industry. We can offer a wide variety of Spec Grade GFCIs to help protect people from electrical shock in homes, offices, hospitals, schools, Hotels, factories and outdoors. You`ll find smart choices for every need, including tamper-resistant, weather-resistant, self-test, and one pilot light with multi-functions, as well as easy-install slim versions and time-saving KEYGMA GFCIs.

Apr., 2018
QC3.0 USB Outlet successfully develop
Feb., 2018
4.2A USB Outlet Batch manufacturing
Jan., 2018
Design patent for 4.2A USB Outlet: 201830030915.6
Dec., 2017
Launch the 4.2A USB Outlet design
Aug., 2017
Hire Dr. Junhua Wang as R&D adviser, now works in the Institute of Physics, Chinese Academy of Sciences
Aug., 2017
The revised Website of KEYGMA was officially launched
Aug., 2017
KEYGMA Factory was founded at Pingshan New District, Shenzhen
Aug., 2017
KG series GFCI receptacle ETL test
Jul., 2017
KG-15,KG-15T,KG-20, the success of R&D
Jul., 2017
Innovation and creation application of Trippping Reset Device of GFCI Outlet. Patent Number: 201720854538.8
Jul., 2017
Appearance patent application of GFCI Receptacle. Patent Number: 201730275085.9
Jul., 2017
KG-20T, the first self-test (auto-monitoring) GFCI finished
Feb., 2017
Innovation and creation application of on-line automatic detection function based on GFCI Receptacle. Patent Number: 201720163567.X
Jan., 2017
Innovation and creation application of grounding device with reverse wiring protection. Patent Number: 201720171494.9
Dec., 2016
“KEYGMA” Trademark Registered
Dec., 2016
KEYGMA R&D Team setup
Nov., 2016
Shenzhen Keygma Electrical Manufacturing Co., Ltd with 750,000.00 dollars registered capital, was founded in Shenzhen Qianhai Free Trade Zone. And controlled by Chipshine (HK) Technology Co., Ltd.
May., 2008
Chipshine (HK) Technology Co., Ltd was founded in Shenzhen, which is engaged in designing and selling leakage protection IC, power IC, integrated chip, etc.