標準系列工作級別為A3~A5，環境溫度為-20~40℃，相對濕度不大于85%，海拔不超過1000m，用于一般車間及倉庫裝卸和搬運重物，不適宜吊危險品。 Standard classification group: A3~A5,circumstance:-20~40℃, humidity less than 85%，altitude less than 1000m, for loading and transiting in common plants and warehouses, but notavailable for lifting dangerous goods.
