1, lpg gas cylinder valve 2, ISO Certificated 3, Tolerance:0.005~0.02mm ... , Capacity:0.5~1020mm 5, Delivery:on time lpg gas cylinder valve About usYaopeng was founded in 2005 as a leading ... .2) Surface treatment:Zinc plating, Anodization, Chemical fim, Powder, Passivation, Sand blasting, Brushing & ploshing etc.3) Processing equipments:CNC machining center ...