MOS House Group Limited, an investment holding company, engages in the trading of tiles and bathroom fixtures in Hong Kong and Macau. It operates in two segments, Trading of Tiles and Bathroom Fixture Products, and Property Investment. The company supplies tile and non-tile products for property development projects, residential and commercial property renovation projects and hotel renovation. It is also involved in solar panel installation, as well as supply and distribution of battery energy storage units; and properties leasing and investment activities. It serves through retail or non-retail channels. The company was formerly known as RBMS Group Limited and changed its name to MOS House Group Limited in January 2018. MOS House Group Limited was founded in 1998 and is headquartered in Wan Chai, Hong Kong. MOS House Group Limited is a subsidiary of RB Power Limited.