Management of production and sales validity period subject to the license, manufacture of industrial and mining measurement and control equipment and accessories, excluding special equipment, excluding casting and smelting, sales, measurement and control system, automation equipment, engineering installation, computer network system, intelligent installation, construction, computer software and hardware, production and sales of electronic products, rubber products, plastic products, instruments, mining machinery, accessories, hardware, electricity, labor protection products, wholesale parts Sales of projects subject to approval according to law can only be carried out after being approved by relevant departments