Metal using a continuous abrasive pattern etchech on No.four items. It is usually used for constructing development elements for both of those interior and exterior in addition to for sash, doors, and panels in propertiesTh2 ?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?