water seal packing

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• SEAL, SEALS — In the Ancient Period The seal was employed from the beginning of the historical era as a method of identifying property, as protection against theft, to mark the clay stoppers of oil and wine jars or the strip with which packaged goods were… …   Encyclopedia of Judaism

• Water turbine — A water turbine is a rotary engine that takes energy from moving water.Water turbines were developed in the nineteenth century and were widely used for industrial power prior to electrical grids. Now they are mostly used for electric power… …   Wikipedia

• Vacuum packing — Salt baked chicken feet sold in China: vacuum packed and ready to eat Vacuum packing or vacuum packaging is a method of packaging that removes air from the package prior to sealing. It can involve both rigid and flexible types of packaging. The… …   Wikipedia

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