Our stainless steel exhaust flexible pipes have obtained ISO9001 quality certificate. Also our flexible exhaust pipes have been passed strictly quality control, and we become the OEM supplier. Auto exhaust flexible pipes are sold not only in China but also to overseas markets for some years. At present, our main overseas markets are South America and North America. CIRCLES sincerely hope to establish friendly and long-standing business cooperation with you. We assure that our automobile exhaust flexible pipes can find your satisfaction in high quality and our service.