Here below are part of Contain company's utility model patent certificates and industrial design pantent certificates:
Guangzhou Contain Plastics Technology Co., Ltd
Haobian#306, Mali Village, Zhongluotan Town, Baiyun District, Guangzhou 510550, P.R.China 
020-86770890 / 86770749 
020-86779143 
527683484@qq.com 
坎达尔公众号 