886-6-3127675
10/F-4, No. 12, Zhonghua Rd., Taiwan
3G Multi user intercom system keypad entry GSM door phone gate remote controller via code sms call app 5541, US $ 1 - 1 / Unit, Taiwan, China, gainwise, SS1603-12-Multi.Source from GAINWISE TECHNOLOGY CO., LTD. on Waimaotong.com.