catalyst metallic substrate,product of pro-environment higher cost performance,higher quality,use in Motorcycle/Car exhaust metallic substrateWe are Beihai Huihuang Langjie Environmental &Tech (Corp) Co,.Ltd,the manufacturer of Metallic substrate in China.We can supply both ceramic element coated with noble metals of Pt, Pd, Rh and ceramic element without noble metals. Metallic substrate is with ...