material:plastic mini ball valve more than 10 years experience About our company MYH ... polishing,electro-plating,chemical plating,paintingEquipmentmelting furnance,casting machines,drill machine,laser cutting lathes,CNC machines,grinding machines,punching lathes, ... ,tensile strength tester,hardness tester,roughness tester,impact test machine,pressure tester,altimeterIf you are interested in any of ...