It's better to give below detail parameters when you send enquiry to us: 1. Lifting capacity:___?tons or what type cntainers you need to lift 2.Span:___meters ( Distance between two wheel centers) 3.Lifting height:__?meters 4.Work duty: __?hours you need the crane to work? what's the full load percentage? 5.Power supply: __?V __?HZ__?Phases 1. Main electric parts are packed by damp-proof wooden case to protect from damage caused by humidity and corrosion. 2. Other parts are packed as standard or your requirement.