紫胶又叫虫胶。过去我国没有紫胶,全靠进口,所以又叫洋干柒。紫胶是由动物(昆虫)产生的天然树脂。这种昆虫一年可以繁殖两个世代,5—11月叫做夏代,11月至次年5月叫做冬代。主要是利用天然树脂通过间接热滤法或酒精溶剂法生产紫胶。寻邬县紫胶虫放养从科研到生产,已经历了19年的历史。县委、县政府对发展紫胶生产十分重视,列入该县四大建设项目之一,近几年来,该县培育了一支紫胶生产的技术 Lac is also called shellac. In the past, there was no shellac in our country, thanks to imports, so it was also called Yang Gan. Lac is a natural resin produced by animals (insects). The insects can be bred for two generations a year, from May to November is called the Xia Dynasty, November to next May is called the winter. The main use of natural resins by indirect heat filtration or alcohol solvent production shellac. Xunwu County Shellac stocking from scientific research to production, has experienced 19 years of history. County Party committee, the county government attaches great importance to the development of shellac production, included in the county one of the four major construction projects in recent years, the county has cultivated a shellac production technology