Started the order production of frictional clutch from1959 .

Strated the order production and resale of individual frictional winding shaft (Differential Shaft)
on March, 1995.

Developed sleeve type individual frictional winding shaft (Differential Shaft) on March, 1996.

Began commercial production of frictional winding ring with a cooperation factory on May, 1996.

Began commercial production of central shaft with a cooperation factory
on May, 1996.

Began cooperative selling agreement with Nishimura Mfg. Co., Ltd.
on August, 1999.

Began single part sale of frictional winding ring on March, 2000.

Establishment of a sale cooperation company in Tokyo area and Nagoya area
in Japan on March, 2001.

Started to sell Super heavy type winding shaft (Tension range from 2N to 150N with ø100mm, W 40mm) on October, 2002.

Dust cleaner equipped shaft was completed on January, 2003.
(PAT. Absorbing microscopic dust from central shaft by vacuum
in side pressure-type)

For further information on the frictional winding ring, see product info.