Suzhou Rainbow Environmental Equipment Manufacturing Co.,LTD 1.A company that has been focusing on Chimney Manufacturing since 1993, over 20 years of chimney manufacturing experience. 2.Unique Enterprise of CICIND menber in Asia. 3.First Chinese chimney company to get CE certificate. 4.The only one that have the German TUV testing center in China chimney industry. 5. Thermo isolated products are certified according to UL-103HT. 6. Products have been well accepted in over 20 countries, including UK, Norway, Sweden, Germany, Denmark, Australia, New Zealand and the US since 2006.