Aier Eye Hospital Group is an IPO listed medical institution in China and one of the large-scale ophthalmic medical institutions in China. The group has successively adopted over 100 sets of Keyi integrated bathrooms.

China International Marine Containers is a global container manufacturer. Among the more than 3000 container houses supplied by CIMC to Rio Tinto, Australia, all of them use Keyi integrated bathrooms.

Beixin Group Building Materials Co., Ltd. is an A-share listed company under the state-owned enterprise China Building Materials Group directly under the State owned Assets Supervision and Administration Commission of the State Council. It is a new building materials industry group in China and a gypsum board industry group company in Asia. Keyi has started cooperation with Beixin Building Materials Group and has provided Keyi's overall bathroom products in multiple overseas projects.

Several influential mining companies in the world acquired Northern Mining Australia in 2000, becoming a leader in exploration, mining, and processing of mineral resources, and one of the iron ore enterprises. Some employee dormitories adopt a container room model, all of which use the Keyi integrated bathroom.