Once this viewpoint had made the rounds, Yuen Foong Yu began to use the water from the latter stages of washing of previous batches to do the initial rinsing of the following batch. They also brought in fiber recycling technology to keep waste water emission to a minimum.
這樣觀念一轉，永豐餘將後段洗滌後的廢水，回收使用在下一批製程的前段洗滌上，並引進纖維回收的技術，使廢水排放減到最低。