Metal which has a steady abrasive sample etchech on No.4 solutions. It is generally used for creating building resources for both equally interior and exterior and also for sash, doors, 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