Steel that has a steady abrasive pattern etchech on No.4 merchandise. It is usually employed for building construction supplies for each interior and exterior and also for sash, doors, 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