Tsim los ntawm 2004, nyob rau hauv Qingshan Industrial Park ntawm Hangzhou nroog hauv Suav teb, HZ DRYAIR tau muab kev daws teeb meem ib puag ncig thiab cov tshuab nrog kev ua tau zoo tshaj plaws rau Tuam Tshoj cov tub rog & cov cuab yeej siv dav hlau thiab ntau lwm cov kev siv pej xeem rau ntau tshaj 10 xyoo.Nws npog thaj tsam ntawm 15000. square metres thiab muaj ntau tshaj 160 tus neeg ua haujlwm, uas suav nrog 5 tus kws tshaj lij engineers, 1 tus kws kho mob kawm tiav, 5 Master's degree kawm tiav