shenzhen longgang district poly up town

ShenZhen Smet Hardware&plastic Co., Ltd. is one of the largest suppliers in China, with more than 10 years&＃39; experience in hardware way ,Especially the lock cylinder ,with our self des...

25 business street, Baoan district

Shenzhen Sigwhale technology Co., Ltd is a company engaged in keyboard, smart Bluetooth device, access control, video door phone, smart home factory and trading company. The company was established in...