Steel which has a constant abrasive sample etchech on No.4 solutions. It is usually utilized for making design 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 và ?n