Metal with a continual abrasive sample etchech on No.four goods. It is mostly utilized for making development elements for both of those interior and exterior and 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 – Tiêu chu