... Technology.b:High quality stainless steel materialc:The screw down cap,It is very fastnesse:Multiple sampling to testf: ... scent and mouthful. the effect is obvious: after using a period, the cup will appear some yellow spots at the bottom, that is, harmful substances, wash ... Liancheng Industry and Trade Co., Ltd. specializes in the production of stainless steel vacuum insulation cups, thermos bottles ...