发布时间:2025-01-27 12:59:45
环保型聚氨酯合成革。水性乳胶皮是将水性基材与无溶剂和发泡剂相结合,是一种环保型聚氨酯合成革。乳胶是聚合物微粒分散于水中形成的胶体乳液的总称,将橡胶微粒的水分散体系称为胶乳、
南京江宁区和南京江宁经济技术开发区的区别这3个单位的上级管理单位各是哪个
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