... by burned and drying out to complete.2. catalysis devices outer shell adopts corrosion resistant plate presure forming,encapsulation welding to complete ... cushion to be apart and fix between the carrier and shell,for heat insulation and shock absorption,and it also has ... this catalytic converter:1. High quality of 409 stainless steel shell(ss304 is also avaialbe), mirror polished.2. 400cell/sqt(300cells ...