With the cooperation and communication between countries grow wider and deeper; shipping is becoming more and more important in the logistic area. Among all the means of transportation, sea freight takes accounts of most of the market share by virtue of its low price and high safety index. Many countries have noticed the importance of world trade and started to build its infrastructure. Especially countries with long costal line should seize the opportunity to benefit from the forwarding industry. Even plastic seals in the logistic are one of the new highlight, while the forwarding service is derived from the shipping business.

Freight forwarding is a service used by companies that deal in international or multi-national import and export. While the freight forwarder doesn't actually move the freight itself, it acts as an intermediary between the client and various transportation services. Sending products in containers with plastic seals from one international destination to another can involve a multitude of carriers, requirements and legalities. These services guarantee that products will get to the proper destination by an agreed upon date, and in good condition.

A port of call is an intermediate stop for a ship on its sailing itinerary, which may include up to half a dozen ports. At these ports, a cargo ship may take on supplies or fuel, as well as unloading and loading cargo. But for a cruise ship, it is their premier stop where the cruise lines take on passengers to enjoy their vacation. Cargo ports, on the other hand, are quite different from cruise ports, because each handles very different cargo and plastic seals, which has to be loaded and unloaded by very different mechanical means. Those ports that handle containerized cargo are known as container ports. Most cargo ports handle all sorts of cargo, but some ports are very specific as to what cargo they handle.