1990年11月17日,国家物价局发出通知,为了保护国内工业生产、减轻财政负担,根据国内外市场价格变化情况,中央外汇计划内进口三聚磷酸纳,从1991年1月1日起以外贸公司开出的进口结算单日期为准,实行代理作价。中央财政不再补贴。外贸部门按进口 On November 17, 1990, the State Price Bureau issued a notice that, in order to protect domestic industrial production and reduce the financial burden, according to the price changes in domestic and foreign markets, the Central Foreign Exchange planned to import sodium tripolyphosphate from January 1, 1991 onwards. The date of import settlement statement issued by a foreign trade company shall prevail. The central government no longer subsidizes. Foreign trade department according to import