Thay đổi độ trắng của giấy in sách để chống cận thị
Cập nhật: 07:15 30/08/2013 GMT+7
"Nhà xuất bản Giáo dục Việt Nam đã chỉnh sửa loại giấy in ấn sách, từ giấy có độ trắng 80-82 ISO trước đây sang loại có độ trắng 73-75 ISO, để đảm bảo chống loá...
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