When coffee beans are exposed to sunlight, they will undergo chemical changes, the moisture will evaporate, and they will begin to deteriorate. The higher the temperature, the faster the deterioration. Some people suggest refrigerating or freezing the coffee beans. However, the coffee beans themselv......
Read MoreIn the electronic bag, the most important thing is the problem of heat sealing. The heat-sealing temperature has the most direct influence on the heat-sealing strength. The melting temperature of various materials directly determines the minimum heat sealing temperature of the electronic bag......
Read MoreAnti-static PE bags can have two methods to make PE anti-static bags have anti-static function. One is to add an antistatic agent inside. A fatal flaw of this method is that the surface resistance value is too high, reaching 10E10-10E12, and the antistatic function is too weak.
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