Principle Bankers Bank of Tokyo-Mitsubishi Sapporo Bank The Industrial Bank of Japan Bank Of Hokkaido Japan Finance Corporation for Small Business Norin Chukin North Pacific Bank Tomakomai Shinkin Bank Development Bank of Japan Hidaka Shinkin Bank Hokuyo Bank Associate Groups Civil Engineering Society Japan CSB Manufacturers Group Japan Construction Society Japan Drainage Society The Foundation Engineering Society Tension Wall Manufacturers Group Japan Concrete Civil Engineering Society Needing Society Japan Standards Society CGP Manufacturers Group Japan Drainage Society New Generation CLub Japan Concrete Products Society Hokkaido Hume Pipe Group Japan Hume Pipe Society Central Hokkaido Concrete Pile Group Japan Box Culvert Society Concrete Products Group Concrete Bore Pile Society Hokkaido Concrete Manufacturers Group Concrete Pile Design Group Sapporo Concrete Group Japan Building Design Group Chitose area Concrete Group Japan Maikoma Manufacturers Group Tomakomai Concrete Group Japan Unihole Manufacturers Group Hidaka Concrete Group Maxstone Manufacturers Group