Manufacturing of plastic products; manufacturing of rubber products; sales of plastic products; sales of rubber products; sales of paper products; sealant manufacturing; seal manufacturing; seal sales; wholesale of hardware products; sales of sealing fillers; wholesale of electronic components; professional design services; technology promotion and application services; sales of photovoltaic equipment and components; sales of power electronic components; information consulting services (excluding licensing information consulting services); sales of special electronic materials; sales of high-performance fibers and composite materials Sales of surface functional materials; sales of sponge products; wholesale of motorcycles and spare parts; sales of office equipment and consumables; wholesale of computer software, hardware and auxiliary equipment; wholesale of kitchenware, sanitary ware and daily sundries; sales of daily necessities; wholesale of stationery supplies; sales of office supplies; sales of graphene materials; software sales; sales of electrical accessories; sales of water transportation equipment spare parts; sales of automotive decorative supplies; sales of industrial textile products; sales of fireproof sealing materials; sales of non-metallic minerals and products.