The main products are special measuring instruments installed onto the transformers or the gas circuit breakers in power plants and substations. They are adopted by domestic and overseas nuclear, thermal and hydraulic power plants and substations. Since almost all processes, including material procurement, machining, assembly and adjustment, inspection, and shipping, are performed by ourselves, it is possible to deal with the various needs of the customers.

We established in 1950 as manufacturer of mainly special granular activated alumina which is used for reclamation of transformer oil. Since then,we have been continuing consistent exertion and study as a special manufacturer of treatment equipment and maintenance apparatus for various fluids such as oil, air and gas.

KSG Co., Ltd. is a Tokyo-based manufacturing company found in 2008.
We have own proprietary management system and hence can provide finished parts accuracy assurance up to 1.3 μm. When it comes to aluminum and plastic processed parts, we deliver more clear products than competitors.
Our goal is to become a company where all customers can do business carefree.