Industrial gas and standard gas

Haohua Gas (Dalian and Chengdu bases) can provide industrial standard gas for oil-natural gas-coal chemical industry, medical and healthcare, new energy chemical industry, power photovoltaic, environmental monitoring, photovoltaic, carbon-1 chemical industry, air separation and high purity gas and other industries. Southwest Institute and Guangming Institute are one of the earliest units to conduct research on standard gas in China, with a history of more than 40 years. They are also the earliest units to conduct research on physical gas standards in China. It is a leading enterprise in China in gas mixing and distribution business, with nearly 100 kinds of standard material certificates and a sound quality assurance system for standard gas production. It is widely used in scientific research, chemical engineering, machinery, electronics, metallurgy, healthcare, environmental protection, metrology and other fields.

Industrial gas and standard gas	Petrochemical industry	10ppm-500ppm(mol/mol) of standard gas for analysis of hydrocarbon impurities in ethylene; 0.1% ~ 30% (mol/mol) of standard gas for composition analysis of liquefied petroleum gas; 10ppm-100ppm(mol/mol) of standard gas for benzene series analysis; 10ppm-50ppm(mol/mol) of standard gas for sulfur analysis; 0.01% ~ 5% (mol/mol) of standard gas for composition analysis of natural gas
	Special gases for healthcare industry	Medical standard gas (CO: 0.2%; He： 10%; O2:20%; CO2:5%～10%; N2O: 14%～50%; Ethylene oxide: 5%～25%)
	Photovoltaic power	Standard gas for photovoltaic industry (carbon tetrafluoride: 1ppm～1000ppm; Hexafluoroethane: 1ppm～1000ppm; Octafluoropropane: 1ppm～1000ppm; Hydrogen sulfide: 1ppm～1000ppm; Sulfur dioxide: 1ppm～1000ppm)
	VOCs standard gas	Environmental monitoring standard gas (CO: 1ppm～1000ppm; SO2： 1ppm～1000ppm; NO： 1ppm～1000ppm; NO2： 1ppm～1000ppm; NH3： 1ppm～1000ppm)
	High purity air separation gas	Standard gas for high purity air separation industry （H2、O2、CH4、CO、CO2；H2、N2、CH4、CO、Ar、CO2；H2、N2、CH4、CO、CO2；H2、O2、N2、CH4、CO、CO2；H2、O2、N2、CH4、CO、CO2；H2、O2、N2、CH4、CO）