JAPAN
| IHARA KOSAN CO., LTD | |
| 【Main Service】 Production and sales of glass powder, manufacturing of raw material for glass | |
| Office | Harima Office(Hyogo) |
| IHARA KOZAI CO., LTD | |
| 【Main Service】 Refractory polish work | |
| Office | Takasago Office (Hyogo) |
| IHARA KAKEN CO., LTD | |
| 【Main Service】 Building material manufacturing, sales and packing | |
| Office | Amagasaki Office(Amagasaki), Yokohama Office(Yokohama) |
| ACID CO., LTD | |
| 【Main Service】 Design and building stack, manufacturing and sales of Anti-Acid products,Anti-Rust coating | |
| Office | Kita-ku, Osaka |
| IWAO CO., LTD | |
| 【Main Service】 Life insurance, accident insurance agent | |
| Office | Kita-ku, Osaka |
| Nafco Co.,Ltd. | |
| 【Main Service】 Electro Prepicitator, Bag Filter,Stabirizer,SCR,Venturi Scrubber Cyclone |
|
| Office | Tokyo |