OOH Holdings Limited provides out-of-home advertising space and services in Hong Kong. It offers advertising display services on transportation and healthcare media platforms, digital media platforms, and self-pickup lockers platforms. The company also provides design and production, advertisement logistics, installation, and dismantling services on various advertising platforms; and printing services. In addition, it sells food and beverage products under the Mizimamei brand name; and pre-owned private vehicles. The company was founded in 2004 and is based in Kwun Tong, Hong Kong.