Hoists are divided into manual hoists and electric hoists. Manual hoists include hand-operated winches and lever hoists. Electric hoists are further divided into wire rope electric hoists and chain hoists. Manual hoists are suitable for lifting and pulling small tonnages, while electric hoists are suitable for lifting heavy objects of large tonnage. The power supply for electric hoists is available in 220 volts and 380 volts; it is important to ensure that the power source matches the requirements when selecting. Hoists can be fixed or running types. A running type refers to one installed on I-beams, which can move forward and backward.