Metal having a continual abrasive sample etchech on No.four products. It is mostly used for constructing development products for both inside and exterior as well as 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