English 
Coffee is very common in life. When buying coffee, you may notice a round valve on the coffee bag and wonder what they are used for. Coffee beans keep giving out large quantities of carbon dioxide for many hours after they have been roasted. Due to this off-gassing process, coffee beans and powder
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Flexible packaging bags, as opposed to rigid packaging, has become the preferred method when it comes to sustainability efforts and minimizing overall carbon footprint. By allowing more flexibility, this packaging method reduces food waste and energy consumption, both in production and transportatio
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