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Why Hanging Ear Drip Coffee Packing Machine is Necessary?
Jul 24 , 2021
The Origin of Hanging Ear Drip Coffee The earliest hanging ear coffee was invented by Japan's Yamanaka Industry Co., Ltd. and formally filed a patent application in 1990. At that time, the hanging ear had only one side, but the principle was the same. Then in 1996, OHKI Co., Ltd. proposed an improved filter bag, moving the hanging ear parts to the lower edge of the filter bag, but the hanging ears...
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