Ningbo Tonsin Machinery located in Ningbo, China, founded in 1992, is one of largest investment casting supplier for casting of carbon steels, stainless steel and exotic material in China.
We can supply also forged components, aluminium die casting parts and mechanical components as well. We are specialized in the production of casting parts for various valves, pump, pipe fittings, auto accessories and food industry components.
Starting from the 1990s, deep changes have taken place in the manufacturing industry in china, as well as the whole world while the manufacturing industry has been gradually moved into china. Our company has seized the opportunity to develop itself with the introduction of advanced technology, inspection and production facilities as well as the developed management and quality-centered concept, which has been put into practice during its years of development.