Since 2005, Carryclean has had close cooperation with BYD's electronics industry, automotive industry, and Academia Sinica, as well as multiple collaborations with bases such as Kwai Chung, Pingshan, Baolong, and Huizhou. Korui has gained unanimous recognition from BYD for its high-quality technical services and reliable equipment quality, and has become its long-term water treatment equipment supplier. In 2005, Carryclean Environmental Protection Company provided BYD Co., Ltd. with a set of 5 tons per hour ultra pure water system for use in electronic cameras. Meanwhile, in 2009, Carryclean Environmental Protection also provided BYD Co., Ltd. with an 8 ton/hour ultra pure water system for surface treatment. In 2009, Korui Environmental Protection Company provided a 15 ton per hour water purification system for Shaoguan BYD Co., Ltd.