chongqing hanxin new building materials co., ltd. is a professional enterprise engaged in the production of ready mixed commercial concrete and mortar. it has the qualification of a construction enterprise and produces various types of ready mixed concrete and mortar. the company has obtained certifications in quality management, environmental management, energy management, and occupational health and safety management systems, and is equipped with professional concrete and mortar laboratoriessince its establishment, the company has been committed to the construction and development of the main city of chongqing, committed to technological innovation, and adhering to the principle of people-oriented,seriously fulfilling social responsibilities and adhering to the business philosophy of "public welfare integrity, customer first, quality first, and high-quality service"