1, after using the chain hoist, you must clean and coated with antirust oil, stored in a dry place. 2, maintenance and repair should be more familiar with the chain hoist institutions who prohibit to understand the performance of the machine principle of random disassembly. 3, chain hoists, after cleaning and maintenance should be carried out load test, confirmation is working, reliable braking in order to delivery. 4, the brake friction surfaces must be kept clean. Brake parts should be frequently checked, prevent chain. the occurrence of heavy objects from falling phenomenon. 5, every half year deal with the chain and wire rope inspection. Each year should be 50% of the rated load of the manual hoist a test. Guangzhou gongyou lift slings machinery co.,ltd is a collective enterprise specializing in research, production and sales of lifting machine. It is a modern enterprise in manufacturing of chainblock ,electric hoist , lifting slings ,steel wire rope , rigging hardware and so on .