Steel using a continuous abrasive pattern etchech on No.4 merchandise. It is usually employed 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 ?