Steel which has a steady abrasive pattern etchech on No.four solutions. It is mostly used for constructing development products for both inside and exterior and for sash, doors, 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 chu?n v�