Vehicle manufacturing; sales: handcarts, metal products, rubber and plastic products, casting machinery, wood products, rubber and plastic machinery, textile machinery, general machinery and accessories, hardware and electrical equipment, building materials; planting, sales, freezing, and cold storage (fluorine refrigeration only): fruits, vegetables, flowers; aquaculture, sales, freezing, and cold storage (fluorine refrigeration only): aquatic products; municipal public works; building construction works; road works; pipeline installation construction (excluding transportation of hazardous chemicals via long-distance pipelines); cargo storage [freezing and cold storage (fluorine refrigeration only), excluding hazardous chemicals and Category I precursor chemicals]; general cargo loading and unloading services; import and export of goods and technology; other general business operations that do not require administrative approval.