Kuwazawa Holdings is a comprehensive building materials trading group headquartered in Hokkaido, Japan, operating across the full value chain of construction materials supply and related services. The group's core business encompasses procurement and distribution of building materials (including cement, ready-mixed concrete, exterior/interior materials, insulation, sashes, and residential equipment such as kitchens and bathrooms) to building material retailers, house manufacturers, general contractors, and construction firms. Beyond materials sales, the group offers construction work (including interior finishing, residential renovation, and large-scale repair works), logistics and transportation of construction materials, real estate leasing, and ancillary services including solar power generation and insurance agency operations.