All systems are complete SS304 Stainless Steel and come fully polished with 4.5" wide and 3" tall oval exhaust tips. Each kit is complete after the cat and retains the factory mounting configuration. Sound is mellow with a robust exhaust note and minimal interior resonance. After-cat systems retain all emission devices and are 50-state emissions legal.  also available complete from the turbo-back, eliminating the catalytic converter, for an impressive turbo response and performance gains.
Certificate:
12) It is obtained ISO9001-2000 International Quality Certificated.
13) Expansion Joints are determined as " The Best Products of Chinese Technology" by China Technological Enterprise council and our company has the right of products import & Export
14) They are also insured the product quality liability insurance by PICC
15) Size, diameter and length can be produced as per clients' requirements.