Tozen Group Founded in 1972 in Japan. The main business is manufacturing and selling construction, civil, mechanical and piping products. PT Tozen Mechanical Products was founded in 2008 in Cikande, Indonesia. In May 2021, it had a subsidiary, PT Tozen Engineering Solutions, as the main distributor in Indonesia. Tozen Group specializes in the production of rubber flexible joints, vibration isolators and valves.