At present, beer barrels are basically divided into two materials: stainless steel draft beer barrels and plastic draft beer barrels. Their biggest advantages and disadvantages are the difference of beer heat preservation performance. The better the heat preservation ability, the less likely it is for beer to deteriorate and turn sour, and the stronger the beer preservation ability. The stainless steel barrel has the natural thermal conductivity of metal and the plastic barrel has the natural thermal insulation, so the plastic beer barrel has the best beer preservation effect. In addition, stainless steel barrels are expensive, and the price of a stainless steel beer barrel can buy almost four plastic beer barrels. Because of "high efficiency and low price", at least 95% of beer barrels in China are plastic beer barrels.

Let's talk about plastic beer barrels again. The best one made in China is Qingdao Guanghua. Just go to Baidu and you will know. If you are careful, look at the beer barrel when you drink beer. Basically, there are Guanghua beer barrels in China.

According to the external temperature and the heat preservation performance of beer barrel, the time of plastic preservation is much longer than that of stainless steel, and a good barrel can be preserved for nearly a week.