MOS House Group Limited, an investment holding company, engages in the retail and supply of various tiles in Hong Kong and Macau. The company specializes in porcelain, ceramic, and mosaic tiles. It also provides bathroom fixtures. The company operates 15 retail shops for home improvement, remodelling, and furnishing materials. It serves project customers and distributors. The company was formerly known as RBMS Group Limited and changed its name to MOS House Group Limited in January 2018. The company was founded in 1998 and is headquartered in Wan Chai, Hong Kong. MOS House Group Limited is a subsidiary of RB Power Limited.