英语翻译This increases the premium placed by retailers upon prod

英语翻译
This increases the premium placed by retailers upon products that are presold by their producers and are readily recognized by consumers as meeting their requirements as measured by satisfactory rates of stock turnover.

this increases the premium which is placed upon products by retailers.
the products are presold as measured by satisfactory rates of stock tunover by their producers and really recognized as meeting their requirements by costomers
我把这个句子拆成这样,然后直译出来,整合一下就好.
这提高了零售商放在产品上的额外费用.当这些产品满足了库存周转率的要求,他们被他们的生厂商预售.当这些产品达到了客户的要求,他们就会认可这些产品.
这是直译.