Why is a standard wooden crate sometimes insufficient for shipping a packaging machine by sea?

• High center of gravity and mass exceed the bending strength of standard crate bottom rails under two-high stacking at sea.
• Unsealed wood cannot block salt-laden humidity; without vacuum foil and desiccant, rails, servo motors and PLC corrode.
• No steel base skid or twist locks means the unit cannot be lashed inside the container and shifts during roll.
• Untreated crates lack ISPM 15 heat-treatment mark, risking customs hold or re-export at destination.
• Without shock/tilt indicators and post-FAT shipping locks, heat-seal jaws and metering screws shift and break.