Maezawa Kasei Industries Co., Ltd. produces and sells water and sewerage related products, and environmental equipment. It operates through three segments: Pipes and Engineering Plastic, Water/Environmental Engineering, and Plastic Molding. The company manufactures and sells fitting and a PVC catch basin with an invert; and parts for housing equipment and various parts for plastic products on a build-to-order basis. It also designs, constructs, maintains, and manages combined wastewater treatment plants, industrial wastewater treatment facilities, plumbing and sanitary equipment, and pump plants. The company was founded in 1937 and is headquartered in Tokyo, Japan.