Why do bulk orders ship via "LTL Freight Carrier"?

Bulk orders ship LTL Freight due to the size of the order. Too large for FedEx Ground, but not large enough to fill a full freight container.

Related Questions:

• What does LTL Freight mean?
• Can I arrange my own freight carrier to ship my bulk order of Culinary Solvent?
• Can you ship Culinary Solvent faster than ground service?