GS0401: Treatment of plastic and metal materials; custom injection molding of products made of plastic and metal; assembly of products, and components of products, for others; providing material treatment information; technical consultation in the fields of treatment of plastic and metal materials, custom injection molding of products made of plastic and metal, and assembly of products, and components of products, for others
GS0421: Product research and development; product design for others; industrial design; packaging design for others; engineering services; technical research and consultation in the fields of product development, engineering and design, and packaging design; technical research in the fields of treatment of plastic and metal materials, custom injection molding, and assembly of products and components of products