... is in the range of 0.1mm to 6 etching material:S/S, SPCC, SPCD, SPCE, STAINLESS, COPPER & BRASS, ALIMINIUM ALLOY ETC, thickness is in the range of ... 0.1mm to 6 mm, formed with single moulds or progressive die ,with surface treatment according to the requirement of products. The ... even and dont have etching spots. The slight defect can be controlled in less 0.1 square millimeter/square ...