Steel that has a steady abrasive pattern etchech on No.4 merchandise. It is generally useful for developing construction components for equally interior and exterior along 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