Metal which has a steady abrasive pattern etchech on No.4 products. It is mostly used for constructing building supplies for each inside and exterior and also for sash, doorways, and panels in structuresTh2 ?ng vi sinh dùng trong th?c ph?m – Tiêu chu?n và ?ng d?ng Ch?c n?ng bình lu?n b? t?t ? ?ng vi sinh dùng trong th?c ph?m – Tiêu chu?n