1. Manufacture and sale of high-pressure gases, liquefied petroleum gases, chemicals, pharmaceuticals, machinery and equipment, and medical devices. 2. All domestic and import/export operations related to the preceding item. 3. Various high-pressure gas piping construction and associated works. 4. Contracting business for construction and civil engineering. 5. Warehousing business. 6. Customs business. 7. Freight transportation business. 8. Secondhand dealer under the Antique Dealings Act.