英语翻译

问题描述:

英语翻译
Each roll on a core in a pe film on it and black and white sticker according to the buyers artwork; at least 4 designs per order

每卷在一个轴上面,加一层PE包装,黑白贴根据买家工艺;至少每个订单4款设计请问黑白贴具体是些什么呢?