Metal with a continuous abrasive pattern etchech on No.four items. It is mostly utilized for constructing development products for each inside and exterior and for sash, doorways, 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 chu?n