With the rapid development of the tea market in recent years, congou black tea gets the favour of consumers gradually, as the the peculiar black tea for china and enjoying a high reputation in all over the world. Rolling is the key process in the manufacturing of the congou black tea, and provides the necessary material foundation for subsequent processing, and play a important role to ensure its quality. In my study, the basic physical properties, appearance texture, mechanical properties, electrical prope...
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