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