TSUWA KOKI (WUXI) CO.,LTD. Was founded in May 2000. The company mainly produces various grades of stainless steel, alloy steel, ductile iron, gray cast iron, carbon alloy steel, ductile iron for pressure vessels, austenitic ductile iron ( ADI), alloy ductile iron (SiMo, Ni, etc.), copper alloy, aluminum alloy and other about 120 kinds. At the same time, it also has the machining and assembly capabilities of stainless steel, carbon steel and aluminum castings. The main industries involved are water pipe equipment, compressor parts, textile machinery parts, structural parts for construction, auto parts and turbocharger housings for locomotives.

The company covers an area of 13,000 square meters, the first phase of construction area is 10300 square meters, with 5 tons of furan resin sand mixer and corresponding sand processing equipment; a complete set of lost wax precision casting line; a complete set of medium temperature wax precision casting line Four sets of 500kg medium frequency electric furnace, two sets of 200kg medium frequency electric furnace, one set of 50kg medium frequency electric furnace; complete physical and chemical analysis equipment; nearly 30 sets of mechanical processing equipment. The company has experienced technicians and skilled operators and quality management teams that carry out strict quality control according to JIS, JWWA, DIN, ASTM and other standards.

The company is a production unit designated by the Japan Waterway Association and has obtained ISO9001::2008 qualification. The company's annual production capacity is 4,000 tons, and currently it is mainly exported, including Japan, Germany, Switzerland, and the United Kingdom. “Tonghe Machine” is a production entity established on the basis of “Tonghe Trade”. At present, in addition to casting materials in its own factories, it still continues its previous procurement and deep processing export business. The company puts quality on quality, creates with integrity as its tenet, contributes to society, realizes coexistence and common prosperity, reconciles technology and culture, and realizes both the producers and consumers of products in a true sense.