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GSM LÀ GÌ? Gsm là từ viết tắt của “Grams per Square Meter” là số gram trên mỗi mét vuông. Giấy có chỉ số định lượng càng cao thì càng dày...
>>>Xem thêm về ứng dụng gsm tại: https://innhanhshd.com/dinh-luong-giay-gsm-la-gi-ung-dung-va-cach-tinh/
