Hiroyuki Yamada

Yamada Sangyo Co., Ltd. is involved in the sales, purchase, importation, and exportation of chemicals and natural gypsum, ceramics, and other raw gypsum materials. The company also manufactures and markets labor-saving machines for iron manufacturers and precision machines. The company is also engaged in domestic coastal shipping, cargo shipping, warehouse operations, and collection and shipment of industrial wastes. Yamada Sangyo was founded in 1910 and is headquartered in Wakayama, Japan.