dupion
1. Silk of Dupion with Special Defect and the Product Quality
双宫丝的特殊疵点与产品质量
2. dupion cocoon reeling
双蚕茧缫丝机
3. Necessary Work of Implementation New Standard of Dupion in Sichuan
四川实施双宫丝新标准应做好的几项工作