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;
New milestone
The new starting point
Year 2015:
participate in the revision of the national standards for the Determination of Trace Moisture in Gas Analysis;
Based on the principle of constant current injection, the high temperature humidity instrument has been successfully developed. Its technology has become the first in China and the world's leading;
It can be used in high temperature, high humidity, fat, solvent, high pollution, strong corrosion and other gas environment for a long time, and can achieve no need of calibration breakthrough;
Innovative patented technology—The research and development of the flow ratio control device based on solenoid valve has successfully solved the problems of low precision and poor reliability of the switch control and continuous control mode in the prior art of the SMT nitrogen protection atmosphere furnace;
The research and development of high efficiency and high quality CO2 recovery monitoring system is successful, which provides scientific data support for CO2 recovery and utilization balance of CO2 recovery enterprises;
At the same time, it is helpful to reduce energy consumption, reduce carbon emissions, reduce costs, and has milestone significance;
The terminal for monitoring and controlling the oxygen in the plateau dispersion environment has been launched, so that the desire of the plateau area pipeline to carry oxygen to the family can be realized, and people can enjoy life on the plateau.
Year 2016：
The establishment of the sensor company, the shift of Chang Ai from "manufacturing" to "creating," laid a solid foundation for Chang Ai to master the core technology for independent innovation in the future, and ensured the stronger development of Chang Ai;
A new type of aluminum oxide humidity sensor based on "Chang Ai" proprietary technology has been successfully developed, which solves the current requirements of the conventional aluminum oxide dew point sensor calibration frequently (twice a year) and storage environment;
The disadvantages of drying, the realization of the use process without calibration, measurement signal without drift, storage conditions without requirements;
Aiming at the field of municipal biogas engineering monitoring, Chang Ai developed a multi-component analyzer of biogas, which uses the independent innovation patented technology-infrared and fuel cell principle sensors, and has friendly and intuitive man-machine interface and printing function, creating industry pioneer.
Year 2017:
Feisi Instrument (Shenzhen) Co., Ltd. was established;
Shenzhen Chang Ai Company was established;
The successful development of the TDLAS analyzer indicates that "Chang Ai" has taken a new step in the field of laser analysis;
The success of the research and development of the new material polymer thin film humidity sensor depends on this new material, and the ultra-low humidity signal and stability of the polymer thin film sensor are improved to the utmost level;
The invention has the advantages of high humidity response of general polymer film sensor, and has unprecedented low humidity response.
Year 2018
A folded optical path laser gas analyzer based on TDLAS technology innovation is introduced;
Excellent optical measurement technology is suitable for various processes, solves the limitations of in-situ laser, and eliminates the revolutionary breakthrough of pre-processing device and almost no maintenance.Provide users with faster measurement, more efficient production and unparalleled ease of use;
A new generation of thermal gas mass flow meter has been successfully developed, and a "fixed proportion difference" method has been proposed innovatively, which overcomes the imperfection and the most challenging requirements of the existing methods, improves the accuracy and repeatability of the meter, and provides the best overall solution for energy efficiency management for customers;
The nitrogen oxide sensor with independent intellectual property rights and mastering the core technology has been successfully developed.It provides an economical and reliable solution for the exhaust gas after SCR and EGR treatment of diesel vehicles to meet the stringent national six emission standards."Chang Ai" has obtained over ten years of many invention patents, hundreds of utility models and patented technologies, and nine registered trademarks of "Chang Ai".
Year 2019
Changai Shanghai headquarters moved to a new location.
The establishment of Malaysia Chang Ai Technology (M) Sdn Bhd
took a solid step for Chang Ai to go global;
The new digital proportional valve developed for the wave-crest welding furnace and reflow welding furnace has been successfully developed, and the controlled nitrogen flow rate reaches above 1000L/min;
Chang Ai's paper published in the Papers Series of the 23rd National Conference on special gases was named the third prize for outstanding papers at the conference.
