标准系列工作级别为A3~A5，环境温度为-20~40℃，相对湿度不大于85%，海拔不超过1000m，用于一般车间及仓库装卸和搬运重物，不适宜吊危险品。 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.
