1. Silk or spun silk yarn with fineness above 20,000 dtex;
2. Chemical fiber yarn (including the yarn spun from two or more monofilaments in Chapter 54), with a fineness of 10,000 dtex or more;
3. Hemp or linen yarn:
(1) For glazing or glazing, the fineness is 1429 dtex and above;
(2) If it is not polished or polished, the fineness is more than 20,000 dtex;
4. Three or more strands of coconut shell fiber yarn;
5. Other plant fiber yarns with fineness above 20,000 dtex;
6. Yarn reinforced with metal thread.