B&H Kingsun (Tianjin) Stainless Steel Co., Ltd  specialized in all kinds of barrels, such as plastic outside stainless steel inside barrels, all stainless barrels , all plastic barrels. The plastic outside stainless steel inside barrel and all stainless barrel have the function of keep tempreture and keep fresh. Under the normal tempreture, the tempreture of the beer in the barrle will just increase about 3C-4C in 24 hours. It can keep well on stong pressure and strong wrestling