Metal with a continual abrasive sample etchech on No.4 merchandise. It is mostly used for creating construction materials for both inside and exterior together with for sash, doors, 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