The technology of colorful reelingcocoon silk is being three difficult problems in which people add pigment to the silkworm food.
利用色素添食技术生产家蚕彩色茧，存在着三大需要攻克的难题。
2
Current cocoon can only reel male and female composite silk which is difficult to mass-produced high-grade silk because male and female are mixed when drying cocoon, boiling cocoon and reelingcocoon.
现行蚕茧在烘茧、煮茧、缫丝时都是雌雄茧混合，只能缫制雌雄复合丝，很难批量生产出高品位生丝。
3
Raw cocoon cost is about 80% of all the silk reeling cost, so cutting the raw cocoon cost is a key section in reeling process.