本文概述了过碳酸钠的性质、用途及发展前景，并重点介绍稳定性较好的过碳酸钠生产工艺。
Properties, USES and future development prospects of sodium percarbonate are discussed. Sodium percarbonate with good stability is introduced.
本文介绍了装饰材料的种类、特点、用途及装饰材料的发展趋势。
In this paper author introduces the sort, characteristic, application and developing tendency of ornamental materials.
研究了聚阴离子纤维素的生产工艺， 溶剂回收利用。介绍了聚阴离子纤维素的用途、现状及发展前景。
Studied the technology for producing polyanionic cellulose, the solvent is taken back to using. Introduced the application, present situation and developing prospect.
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