棉花是我们生活的必需品，也是纺织工业的重要原料。我国不是产棉大国，但却是棉花消耗的大国，由于产量不足，往往供不应求。因而棉花成为市场上的紧俏商品，多年来由国家硬性管理。然而，在民间却又积压了大量旧棉。使用化工技术使旧棉复新，不仅缓解了市场棉花供不应求的矛? Cotton is a necessity for our life and an important raw material for the textile industry. Our country is not a big cotton-producing country, but it is a big country that consumes cotton. Because of insufficient output, it is often in short supply. As a result, cotton has become a staple commodity on the market and has been hardmanded by the state over the years. However, a large amount of old cotton was backlogged in the private sector. The use of chemical technology to rebuild old cotton, cotton not only ease the market demand for the spear?