Sales and processing of insulation board, sales and processing of plastic board, sales and processing of acrylic board, sales and processing of PVC board, sales and processing of PC board, sales and processing of cork board, sales and processing of copper clad board, sales and processing of carbon fiber board, CNC processing, sales and processing of carbon fiber products, sales and processing of spring thimble, sales and processing of epoxy board Processing, sales and processing of circuit boards, sales and processing of hardware products, sales and processing of electronic products, retail and wholesale of electronic components, retail and processing of electronics, communication and automation control technology research and development, sales and processing of CNC products, CNC processing, sales and processing of hardware stainless steel, sales and processing of gold wire, sales and processing of copper Sales and processing, aluminum sales and processing, plastic products sales and processing. Sales and processing of mica sheet, sales and processing of double-sided tape, sales and processing of adhesive paper