Manufacture and sale of resin parts
Painting of automobile parts, plastic injection molding, machining and assembly of automotive parts, automotive sales, maintenance, painting, bodywork
General area freight trucking business, warehouse cargo handling and packing work, delivery agency business for auto parts and machine parts,
assembly and processing business of auto parts, industrial waste collection and transportation business
Worker dispatch business, employment placement business, outsourcing business
Office automation equipment sales and technical services, office steel furniture sales, computer system proposals, development, and maintenance
Web solutions, CS solutions, ASP/SaaS/cloud-related business, security measures business
Manufacture and sales of magnetic field measuring instruments and application system products, sales of various non-life insurance products,
sales of gifts, purchase of machinery and materials
三島光産香港有限公司
Manufacture and sale of precision molded resin products (injection molding)
三島光産精密塑胶（東莞）有限公司
Manufacture and sale of precision molded resin products (injection molding)
Continuous casting mold repair
Heiwa Automobile Industry Co., Ltd.
Human Bridge Co., Ltd.
Mishima OA System Co., Ltd.
Unity Soft Co., Ltd.
MTI Co., Ltd.
Unity Soft Co., Ltd.