CNC Machining Parts, Kn95 Face Mask Components Dongguan Kaixin Precision Hardware Co., Ltd. Base Info Material:Brass, Stainless, PlasticsTrademark:KAIXINTransport Package:BoxSpecification:Brass, StainlessOrigin:China Description Pre:Face Mask Machines Components, Turning Parts. CNC Machining Parts. Next:N95 Face Mask Components, Heat Treatment.