Lin Chih-sen, a division chief at the IDB, comments that many raw materials derived from waste do not have the same level of purity as original feedstocks, and so do not meet manufacturers 'requirements. Hence the proportion of waste materials offered through the exchange center which are actually sold is very low--less than 10 %.
不過交換中心目前的供需並不平衡，工業局七組組長林志森指出，由廢棄物製成的原物料品質不如原先精純，不符廠商的需求，因此交換中心的成交比例偏低，連一成都不到。