Successful development and production φ0.381mm（φ0.4mm) Fuzz Button）

       经过攻关，对产品结构设计和工艺的进一步改进，使产品结构更加随机、均匀、密实，极大地避免了散丝现象，同时成功生产出φ0.381mm（0.4mm）毛纽扣（Fuzz Button）产品。

      After tackling key problems, the product structure, design and process were further improved, so that the product structure was more random, homogeneous and dense, avoiding the spread of metal wire, and successfully producing φ0.381mm (0.4mm) Fuzz Button.