Datong tools is one of the best manufacturer in producing shop crane in China, there're some different kinds of quality and function here: 1. Different weight for the same capacity are available for choose. 2. Certificate with CE or ANSI/ASME PALD 2009 for different market. 3. Foldable or fixing type for different using. 4. Universal swivel wheels for easy moving. 5. Different capacity for engine leveler and support for choose. 6. Package can be carton, plywood case or by pallet, or based on your request.