If you need to recycle, you need to pay the round-trip freight, so the ISO freight is higher than the barrel.

The use of storage tanks can save the purchase and disposal costs of oil drums, which are two direct cost savings in the transportation process.

ISO tank is also called "tank container", "international standard container tank" and "tank box". Tank container is a stainless steel container with an international standard container external frame of 20 feet. The overall dimensions and stacking mode of the whole container are exactly the same as those of the 20-foot international standard container, and the outer frame is the standard 20-foot container size (20'X8'X8.6'). The water tank lining is made of stainless steel.