... 1000-year history, on the north side of the Qiangtang River,Jianggan District, Hangzhou City, ... take the enterprise spirit as the essential element of the growth, procactively carry out the innovation, ... two-sides banlances on fan, Vibration speed virtual value of fans ≤0.5 mm/s High stabitility: ... number6. 140 :Fan Impeller diameter7. 2: No of the product 3. Products Display4. Factory Production Display ...