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江苏省农林厅畜牧局于1994年5月18日发函各地指出:由于蚕用红霉素溶液产品
The Bureau of Animal Husbandry of the Jiangsu Provincial Department of Agriculture and Forestry issued a letter on May 18, 1994, indicating that due to the use of erythromycin solution for silkworm products