they approve items that meet the noise compliance standards - they dont make exhausts they just certify them
(Japan Association of Automobile exhaust, noise problems seriously committed to environmental performance of automotive mufflers, JASMA the standards system, to comply with government regulations such as the main vehicle for traffic laws and safety regulations for road transport vehicles, self- Check the car noise, etc. and is Kurieiteibu corporate organizations work to promote high performance automotive aftermarket muffler consideration of social and environmental noise.
国土交通省に よる平成22年4月施行の事前性能確認制度の「性能等確認済表示」にむけ、会員一丸となって取り組み、安心してご使用できるマフラーの普及に努めてまいり ます。 Performance checks in advance of the enforcement system in April 2010 by the Ministry of Land, "and confirmed the performance show," Towards, work as a team member to strive to spread your scarf with confidence. )