Distributor and partner companies
| Agency |
|---|
| Sumitomo Osaka Cement Co., Ltd. |
| Sumitomo Metal Mining Shiporekkusu Co., Ltd. |
| Suzukisangyo Co., Ltd. |
| Kinki Concrete pumping cooperatives |
| Osaka cement wholesale cooperative |
| Kochi lime Industry Co., Ltd. |
| Subcontractor |
| LRS Corporation Lars |
| Hori Technical Ken (ALC construction work) |
| Kitaura SCC kanzai Co., Ltd. |
| TP net,Inc. |
| FEK Shokai Ltd. |
| STEC Ltd. |
| Kamata Chamber of Commerce and Industry Co., Ltd. |
| Kanzan Co., Ltd. |
| Chuken consultant Co., Ltd. |
| KOYU & CO.,LTD. |