- Provide Sulfide Resistance, Used for Beer Fermentation, Storage - Used for Beer Brew or Other Food Grade Liquid Store, such as Edible Oil - Advanced Deep Drawing Technology Provided by BestFriends - Smooth and Straight Welding Seam for Top Middle and Bottom - Ultra-Inside Argon Shielded Welding, Unique - Eco-Pickling & Passivation Surface Finish - Safety Touch for Handle, no Burrs and Edges