早上我收到一封报价如下 I am looking for Plastic opp packaging bag in Food packaging bags category. Example of product I need: -Plastic opp packaging bag with printing -1.custom printed opp bag -2.self adhesive opp header bag -3.opp film bags -4.SGS
其中2.不干胶标签,header bag 是要表达贴在袋头的不干胶吗? 还有3.OPP膜袋,4.SGS又是表示什么?