The company invested by Chuwa Bussan Co. Ltd.---Tianhe Mechanical Equipment Manufacturing Co., Ltd., mainly manufacture the large-scale shield machines used in tunnel construction.

Tianhe Mechanical Equipment Manufacturing Co., Ltd., invested by Chuwa Bussan Co., Ltd., located in China, manufactures large-scale shield machines based on Sino-Japanese technical cooperation. Chuwa Bussan supplies its products for countries such as China, Japan and those in Southeast Asia.

The main products are tunnel boring machine (shield machine), large-scale grab dredger (longer than18m), large-scale steel structure, ship anchor winch, towing winch and shockproof parts for the bridge

16 patented inventions for the annual production capacity of 40 shield machines (with maximum diameter of 16 meters), and large-scale steel structure of 50,000 tons; 4 utility model patents with departments of installation, maintenance and after-sale service forshield machine; providing the services of on-the-spot installation, handling, overhauling , construction; and after-sale servicesuch as technological consultation and training service, etc..