Steel that has a steady abrasive pattern etchech on No.4 products. It is generally useful for building building resources for both inside and exterior together with for sash, doorways, and panels in buildingsTh2 ?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 c