由江苏工学院生物环境工程研究室、江苏省供销社食用菌研究所、江苏省丹徒县商业机械厂共同研制的“PYG—100型食用菌液体菌种培养罐”已于1988年12月28日由江苏省科委组织在镇江通过鉴定,并于1989年1月由国家专利局批准获得专利。丹徒县商业 By the Jiangsu Institute of Biological Environment Engineering Research Institute, Jiangsu Province, Supply and Marketing Institute of Edible Mushrooms, Jiangsu Dantu County Commercial Machinery Factory jointly developed the “PYG-100 edible mushroom liquid culture tank” was December 28, 1988 Day by the Jiangsu Provincial Science and Technology Commission in Zhenjiang passed the appraisal, and in January 1989 by the State Patent Office approved the patent. Dantu County Commercial