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Southwest Branch

Haohua Gas Co., Ltd. Southwest Branch is a branch established by Haohua Gas in Southwest China, which was established in 2021. Formerly known as the Gas Division of Southwest Institute of Chemical Co., Ltd., the company is the operating unit of the Secretariat of the National Technical Committee 206 on Gas of Standardization Administration of China, and one of the earliest units engaged in gas separation and purification, development and production of standard gas in China. It can provide users with one-stop service of gas engineering design and general contracting, technical service and training of standard gas and special gas, gas analysis and testing, and its business involves chemical industry, energy, electronics, metallurgy, food, healthcare and other fields.

Affiliation of secretariats of standards committees

No.	Name of standards committee	Committee number	Founding date	Current session
1	National Technical Committee 206 on Gas of Standardization Administration of China	TC206	1994	5
2	Gas Analysis Branch of National Technical Committee 206 on Gas of Standardization Administration of China	TC206/SC1	2009	2
3	Mixed Gas Branch of National Technical Committee 206 on Gas of Standardization Administration of China	TC206/5C2	2009	2
4	Gas Branch of National Technical Committee for Standardization of Semiconductor Equipment and Materials	TC203/SC1	1994	5
5	Coal Chemicals Branch of National Coal Chemical Standardization Technical Committee	TC469/5C2	2010	2
6	Working Group on Gas Standard Samples of National Standard Sample Technical Committee	TC118/WG3	2005	2
7	Fluorine-containing Gas Branch of National Technical Committee 206 on Gas of Standardization Administration of China	TC206/SC3	2017	1