List of Group Companies
- Address
- 2-1-1 Nihonbashi-Muromachi, Chuo-ku, Tokyo, 103-8338 Japan
- Phone
- 03-5290-5505
- Address
- 209-1 Oominato, Naka, Tamana, Kumamoto 865-0064 Japan
- Phone
- 0968-72-5121
- Description of Business
- Manufacturing, processing, and sales of rain gutters, polyethylene culvert drainage pipes, and other synthetic resin products
- Address
- 2-4-1 Shiba-Koen, Minato-ku, Tokyo, 105-8568 Japan
- Phone
- 03-5405-6111
- Description of Business
- Wholesale of inorganic and organic industrial products, synthetic resin products, industrial raw materials, civil engineering and construction materials, waterproofing and other construction work, insurance agency
- Address
- 306 Koyagi-machi, Takasaki-shi, Gunma, 370-0071 Japan
- Phone
- 027-362-7510
- Description of Business
- Manufacturing, processing and sales of synthetic rubber products
- Address
- 1-5-25 Kiba, Koto-ku, Tokyo, 135-0042 Japan
- Phone
- 03-5632-9530
- Description of Business
- Molding, processing, and sales of various plastics for food containers, etc.
- Address
- 2-7-4 Nishi-Shinbashi, Minato-ku, Tokyo, 105-0003 Japan
- Phone
- 03-3519-5600
- Description of Business
- Manufacturing and sales of polystyrene and styrene-based specialty resins
- Address
- 1-5-11, Nihonbashi Honcho, Chuo-ku, Tokyo, 103-0023 Japan
- Phone
- 03-5290-5362
- Description of Business
- Repair, design, construction, management and other services for concrete structures
