三井研削砥石 Company Profile

Regarding whetstones, we have received such high praise that we are described as "Mitsui of disc whetstones."

Since the introduction of general grinding stones for double-sided flat grinding machines, up to today's CBN and DIA wheels, our company has always been at the forefront of this field, receiving high praise from many customers both domestically and internationally, to the extent that we are often referred to as "Mitsui of disc grinding stones." Additionally, with our extensive range of "general grinding stones for precision grinding," including BELEXTRA, we are sure to assist in fulfilling our customers' needs.