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we are one of the main postal mailing box manufacturer and exporter in qingdao china.

Its triplewall construction creates higher compression strength than wood packaging of equivalent size. It is in compliance with and approved by US Federal shipping regulations and specifications. It is the only corrugated product with a globally recognized brand name.

Tri-Wall Pak has 10 times the compression strength of conventional corrugated board. It is excellent for stacking during shipping and warehousing.

Though heavy-duty in its stacking and compression strength, Tri-Wall Pak is light in tare-weight. This feature is critical in substantially reducing air freight cost.

By using one piece material, Tri-Wall Pak reduces overall package size when compared with wood packaging, thereby increasing load efficiency and reducing cost of truck and container shipments.