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一种具有世界先进水平的农膜——杀草地膜,已由沈阳化工研究院和河北冀县农药厂研制成功。这种地胰被化工部列为“八五”重点技
One of the world’s advanced level of plastic sheeting - grass film, has been Shenyang Chemical Research Institute and Hebei Ji County pesticide plant successfully developed. This kind of pancreas is listed by the Ministry of Chemical Industry as the “85” key technique