Metal sheet printing 1.Material:SPCC 2.Technique:CNC machining,riveting.silkscreening. 3.Powder coating ... ,drilling,tapping,silkscreening,welding,progression die,grinding,riveting,etc.2.Material: stainless steel, brass, copper, aluminum, iron(SGCC,SPCC,SECC),etc ... free to let me know.Welcome!! Shenzhen factory metal sheet printing