Ltd. is a wholly-owned subsidiary of Zhejiang Dunan Artificial Environment Co., Ltd. (stock abbreviation: Dunan Environment; stock code: 002011), which is the predecessor of Zhejiang Dunan Artificial Environment Co., Ltd. and directly belongs to Zhejiang Dunan Artificial Environment Co. Ltd. It specializes in the production of various central air-conditioning mainframe and terminal equipment, and is the drafting unit of several national standards for central air-conditioning, a national key high-tech enterprise, the implementation unit of the National Torch Plan project, and has a national technology centre and a nationally accredited laboratory (CNAS certification).

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Shield is one of the earliest private enterprises in the industry to break the family-based management model and establish a modern enterprise system, and one of the few enterprises in China to have an Enterprise Charter. It has formed the Shion Way, which combines the values of "integrity, respect and professionalism" and the outlook on life of "entrepreneurship, creativity and innovation".

The company has implemented a strict and standardised corporate governance model, and established a corporate governance system with clear responsibilities and rights, standardised operations, and effective supervision and check-and-balance mechanisms among the "three committees and one layer".

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