Zhejiang Aosen Machinery Co. , Ltd. (founded in 2009) and its subsidiary Guangdong Aosen Heat Exchange System Co. , Ltd. (founded in 2017) are specialized in the production and development of rail transit , automotive air conditioners , air conditioners for refrigeration and refrigeration , and communication environment control systems. R&D and manufacturing enterprises of various heat exchangers such as air conditioners , marine and industrial cooling |