We no longer manufacture pure cotton shirts as their retail prices tend only to attract that upper end of the market.
我方已不再生产纯棉衬衫因为其零售价格只能吸引高档消费者。
Even more processes are never patented at all but kept as secret processes.
更多的工艺过程根本就不会取得专利权,而是作为秘方保存着。