Shaoxing Shangyu Qingfeng HVAC Equipment (绍兴市上虞清风暖通设备有限公司) designs, produces and sells energy-saving special-purpose and general fans, large industrial fans, fire smoke exhaust and ventilation equipment, and B-type non-combustible fibreglass ductwork. It is based beside the Cao’e River in Shangyu, and its range includes HTF axial smoke exhaust fans, HTFC cabinet centrifugal fans, mixed-flow fans, roof fans and tunnel jet fans. Its smoke exhaust fans, smoke exhaust valves and fire dampers hold fire product certifications 5982024ZY060027, 5982024ZY060040 and 5982024ZY060043 from the Tianjin Fire Research Institute of the Ministry of Emergency Management.