There are various parts of the packaging bag, such as the air valve, which is generally used on the coffee packaging bag to ensure that the coffee inside can “breathe”. Iji maa atụ, a na-eji ọkọlọtọ ihe arụpụtara nke ahụ mmadụ eme ihe maka ihe dị arọ. na nkwakọ ngwaahịa.
