Geomaster GroupGeomaster Group (formerly called "Tianjin O.E.M. Instruments Co., Ltd." was founded in 1996, ....Address:Dongguan Emtek Co., LtdAddress:no.281.guantai road,nancheng district, dongguan, guangdong, ChinaAnda North Industrial & Trade Co., Ltd.As sub-company of the largest logistics professional in North China (Tianjin Anda Group), we have established ....Address:Erwei, Tianjin, Tianjin, ChinaYuwei Info., Technology Co., LtdYuweiteck &ExtremTrac @ Technology Co., Ltd, headquartered in Shenzhen, China, established 1998, its ....Address:4Floor,2nd Building,Minzhi the 3rd Industrial Zone,Bao'an District, ShenZhen, Guangdong, ChinaShenzhen GuangJieXin Telecom CO., LtdShenzhen GJX Telecon Tech .CO., LTDwhich was established in 2000, concentrates on designing and manutacturing ....Address:龙岗区横岗镇龙村工业区龙兴路102号, Shenzhen, Guangdong, China 1