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About Us

Development Path

In 1993, Shanghai Dehui Cleanroom & HVAC System Co., Ltd. was established.

In 1994, Shanghai Dehui Purifying Air-Conditioning Installation Co., Ltd. was established.

Since 2002, it has been recognized as Shanghai High-tech Enterprise, and it was appraised as Excellence Award of Design Innovation by Shanghai Industrial Design Promotion Association at the same year.

In 2011, it was established as a subsidiary of Tofflon.

In 2003, it passed the ISO9001:2000 Quality System Certification, and has obtained dozens of technical patents, including the direct evaporation air conditioning units.

In 2018, it obtained the 3rd class qualification for general contracting on construction engineering, the 2nd class qualification for professional contracting on electronic and intelligent engineering and the 2nd class qualification for professional contracting on building decoration engineering.

In 2003, it was recognized as Shanghai high-tech achievements transformation project.

In 2019, it obtained the 1st class qualification for professional contracting on MEP installation and the 2nd class qualification for professional contracting on fire fighting facilities engineering issued by the National Ministry of Construction.

In 2006, its products were specified as Shanghai key new products.

 

In 2007, its products were awarded as national key new products and Shanghai famous brand products.

 

In 2011, it was established as a subsidiary of Tofflon.

 

In 2018, it obtained CE export certification for purifying air-conditioning equipment.