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Shenzhen Chitongda Electronic Co., Ltd.
Nie-Tech Co., Ltd.
Shanghai Kingtech Industrial Co., Ltd.
Shenzhen Safety Electronic Technology Co., Ltd.
Ningbo Ambest Electronics Co., Ltd.
Shenzhen Professional Security Technology Co., Limited
Hao Nai Industrial Co., Ltd.
Shenzhen Sumring Technology Co., Limited
Ease Security Co., Ltd.