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一九九六年三季度全国主要城市塑料原料市场价格@钟栋成中国塑料加工工业协会供销信息交流站《皮塑信息》
Market Price of Plastic Raw Materials in Major Cities of China in the Third Quarter of 1996 @ Zhong Dongcheng China Plastic Processing Industry Association Supply and Marketing Information Exchange Station “Plastic Information”