In addition to the sales of products that need to be mildewed, the sales of feed products, domestic agents, import and export of goods, import and export agents, sales of feed raw materials, sales of gold and silver products, import and export of food, sales of coal and products, sales of metal materials, sales of plastic products, sales of special equipment for plastic processing, sales of leather products, sales of machinery and equipment. Sales of rubber products, sales of daily groceries, sales of chemical products (excluding licensed chemical products), sales of plastic packaging containers and tools for food, sales of timber, sales of wood and bamboo processing machinery, sales of special equipment for environmental protection, sales of special labor protection products, sales of special ceramic products, import and export of technology. Technical service, technical development, technical consultation, technical exchange, technical transfer and technical promotion