Changchun Changcheng Teaching Instrument Co., Ltd. is located in the Silicon Valley of Optics in ChinaChangchun, known as the 'Spring City of the North', is a member of the China Education Equipment Industry Association and the Jilin Province Education Equipment Industry Association. It is also one of the professional manufacturers of teaching instruments in China. In 2020, Changchun Great Wall Teaching Instrument Co., Ltd. was honored with good news. With a professional R&D team, strong technical strength, continuous innovation ability, and scientific enterprise management, it has been recognized as a high-tech enterprise!

The company mainly involves optical instruments, physics instruments, demonstration instruments, experimental instruments for the National High School Physics Olympiad competition, and experimental instruments for advanced university courses in key high schoolsMore than 500 types.

The company's declarationcountryzhuangliproductLarge scale optical comprehensive design expandable experimental system, digital Young's modulus tester, etcMore than thirtyItem ProductApproved,Among them, the force electric light comprehensive experimental instrument obtainedNational Inventionzhuangli,More than ten products, including the flow type nuclear magnetic resonance experimental instrument jointly developed with teachers from various universities, have successively won honors in the national competition for physics experimental instruments in universities（tenFirst prizenineSecond prizetenThird Prize),Among them, the flow type nuclear magnetic resonance experimental instrument is even moreInstitute of Metrology, Chinese Academy of SciencesSubscription and selection2020China Higher Education ExpoA typical case of the "Double Hundred Plan for School Enterprise Cooperation".

Our company has cooperated with schools and enterprises to jointly develop a comprehensive experimental instrument for force electric light, which has been awarded the national inventionzhuangliThe current sales volume has reached the whole country, and the main users include: Fudan University in Shanghai, Jilin University, Beijing University of Petroleum, Tianjin University of Science and Technology, South China Normal University, Yanbian University, Jilin University of Architecture, Changchun University of Science and Technology, Siping Normal University, Changchun Normal University, Jilin Normal University of Technology, Xingtai University and other schools.

Our company's independently developed large-scale optical comprehensive design and expansion experimental system has won national recognition and is now sold nationwide. The main users include Nankai University, Tianjin University of Science and Technology, Jilin University, Dalian University of Technology, North China University of Technology, Chengde Medical College and other universities.

Our company has independently developed a sound velocity measuring instrument, a digital Young's modulus measuring instrument, a high-temperature superconductor resistance transition temperature measuring instrument, a permanent magnet Zeeman effect experimental instrument, a Planck constant measuring instrument, an ultrasonic grating experimental instrument, a proportional tangent lens experimental instrument, and a magneto-optical tuning experimental instrument The Faraday effect tester, soft magnetic material characteristic tester, and spectrometer experimental device have been approved by the national government and are now sold nationwide. The main users include Jilin University, Tianjin University of Science and Technology, University of Electronic Science and Technology of China, Dalian University of Technology, Tarim University, Chengdu University of Technology, Nanchang University, Ganzhou Normal University, Chongqing Three Gorges University, Guilin Aerospace Industry College, Shenzhen Vocational College, Qilu Medical College and other schools.

Changchun Great Wall's sales network is nationwide and exported. It has won multiple bids in domestic government bidding and university procurement, and has served hundreds of universities, including Tsinghua University, Jilin University, Harbin Institute of Technology, etcMore than 80 universities have established physics demonstration exhibition rooms,Assist Jilin University Affiliated Middle School, Northeast Normal University Affiliated Middle School, Yali Middle School, Huanggang Middle School, and Chengdu No.7 Middle School nationwideMore than 50 key schools are preparing to establish physics Olympiad laboratories.