... your requirements, drawing or sample.Shandong shengyang hardware products co., LTD is located in Yinhe economic zone of Dezhou city ... , Iron (SPCC, SECC, SPTE, tinplate), aluminum alloy, red copper, brass, bronze alloy, etc. 6. Surface treatment: professional stainless ... coating, and immersion coating), and plating (chrome, nickel, copper, zinc electroplating) are also workable.7. Applied software for ...