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Development history

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10 years experience:Obtain various of  invention patents hundreds of utility model and design patent、9 series“Chang AI”registered trademark.


Year 2004:“ChangAi” established


Year 2005:Chengdu ChangAi R&D Center estbalished

Ion current sensor design successfully ,which break the traditional Zirconia measuring method, initiate that online measuring without standard gas


Year 2006:China's first ion current high purity oxygen analyzer design successfully


Year 2007:Environment application (CEMS) ion current high temperature humidity analyzer design successfully, which had been widly used ( been used in 2008 The Olympic Games );


Year 2008:National gas standard technical  committee menber

Shanghai ChangAi technology & development Co.,Ltd;
China's first nitrogen gas analyzer installed at Mausoleum of Mao Zedong (used for gas protection);

"Chang Ai" Enter the national market


Year 2009:China's first zirconia principle oxygen nitrogen analyzer design successfully;
Pass ISO9001:2008international quality management system certification ;

“ChangAi” Oxygen analyzer become the Military equipment.


Year 2010:China's first maintenance free coke oven gas system put into operation successfully at Shandong Laigang ;
Jiaxing ChangAi case Co.,Ltd estbalished;

Ion current oxygen analyzer company standard put on record ;


Year 2011:Ion current oxygen analyzer had become the south pole expedition team's designated Products;
oxynitride analyzer company standard put on record successfully and get the CMC certificate;

"ChangAi" enter the iron and steel metallurgical coal chemical industry, etc 



Year 2012: The first "Multi-functional protective" electrochemistry oxygen analyzer desgin successfully;
Zirconia principle nitrogen oxygen analyzer gain the Shanghai science and technology small and medium-sized enterprise technology innovation fund;
oxynitride analyzer gain Shanghai high-tech achievement transformation project;
China gas association members

Switzerland Dextens establish


Year 2013:World's first long life 3d ion current principle high purity oxygen sensor design successfully (Can detect 99.999% O2,10 years' life);
Zirconia high temperature humidity analyzer gain chengdu science and technology small and medium-sized enterprise technology innovation fund;
America 4frontdevices establised 
China industrial gases industry association gas analysis technical and instrument  committee vice-chairmen;
Zerconia principle oxynitride gain national  key new product 


Year 2014:The national gas standardization technical committee award ChangAi "2014's  annual standardization advanced company" 
Become the Drafting company of national's standard《The electrochemistry method of oxygen measuring in gas 》;
Our company's Research Projects 《Trace oxygen analyzer》gain Shanghai small and mid-sized enterprise technology innovation fund project ; fuel battery trace oxygen sensor design successfully, which gain revolutionary breakthrough, and break international monopoly in this field, and fill a void in china;