We Perform Every Converter Manufacturing Process, To Ensure Quality.

 Tokyo Roki is the only manufacturer in Japan that is responsible for every stage in the production of converters, from the processing of catalytic converters to canning. And every production step follows the spirit of our motto,"Saving Resources for a Clean Environment."

Tokyo Roki began developing catalyzers for exhaust gas purification in 1961, and began marketing them for off-load vehicles in 1964. Then in 1970, our research into special welding techniques(the welding together of different types of materials, etc.) led to our beginning the manufacture of thermal reactors. These and other achievements, and the technical expertise we have built up over the years, have earned us the confidence of many customers.