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- Emdoor Digital Technology Co., Ltd.
- Skytek Smart Communication Limited
- Shenzhen Ctyon Telecommunication technology Co.,Ltd
- Shenzhen GPD Technology Co.,Ltd
- ShenZhen Tena Electronic.,LTD
- Singer Technology(Shenzhen)Co.,Ltd.
- Shenzhen Hengchangtong Electronics Co., Ltd.
- Shenzhen Fangyitong Technology Co.,Ltd