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● Factory-Made Double Stainless Steel Flues and Chimneys

Rainbow participated in the edition of Technical Specification for Factory-Made Double Stainless Steel Flues and Chimneys CECS415：2015 on Dec. 1, 2015.

Suzhou Rainbow Environmental Equipment Co., Ltd

● Standard for Appraisal of Reliability of Chimneys

On Dec.2, 2014, Rainbow participated in the edition of Standard for appraisal of reliability of ChimneysGB51056-2014.

Suzhou Rainbow Environmental Equipment Co., Ltd

● Code for Design of Chimneys

On Dec. 25, 2012, Rainbow participated in the edition of Code for Design of Chimneys GB 50051-2013.

Suzhou Rainbow Environmental Equipment Co., Ltd

● Manual for Design of Industrial Chimneys

On Jul. 3, 2017, Rainbow participated in the edition of Industry Chimney Design Manual published by Metallurgical industry press.

Suzhou Rainbow Environmental Equipment Co., Ltd

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