In our daily life many brushes and bristles need to use nylon wire with good toughness, such as: head comb, toothbrush, hoover brush, bath brush, polishing brush, strip brush, brush roller, etc., poor toughness of nylon wire in the Хэсэг хугацаанд хэрэглэхэд үсний хэв гажилт, урвуу үс харагдах болно...
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