- ShenZhen Grand Electronics CO.,LTD
- Address:NO. 102 Longguan high speed way ShenZhen, GuangDong
- Tse
- Address:Rm.403, 4/F, Tower 1 Harbour Centre, 1 Hok Cheung Street, Hung Hom, Hong Kong China Hong Kong
- Kenbotong Technology Co., Ltd
- Address:Hong Kong
- Shenzhen Eratech Ltd.
- Address:5B,tower1,yangguanghuayibuilding no.3003,nanhaiave,nanshan district shenzhen china guangdong shenzhen 518052 Hong Kong
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