Wholesale and retail metals(except for noble and rare metals), building materials, chemical products(except for initiating explosive devices and dangerous chemical materials), hardware, common machines, pig iron, coke, minerals(except for the minerals specially controlled by the country), decorating materials, local products and various household supplies, paints, and household appliances. Self running and also acting as agent for importing and exporting all kinds of commodities(except for sixteen kinds of exporting products which are directly controlled by the country and fourteen kinds of importing products which could only be handled by the companies appointed by the country) and technologies, as well as processing of imported materials, compensation trade, counter trade, transit trade, and also dealing with dispatching labors in lines of construction, production and service abroad(except for sailors).