1.选择那些自然状态，含有适量有益矿物质成分下的桶装水对人体健康有重要的意义，通过反渗透、电渗析、蒸馏、树脂软化等方式制备的纯水由于处理过程中，不仅去除了对人体有害的化学物质、细菌和病毒，同时除掉了对人体有益的元素，所以不能长期饮用纯净水(有的也称太空水）。 1. the selection of barreled water under the natural state, with a proper amount of beneficial minerals, is of great significance to human health. The pure water prepared by reverse osmosis, electrodialysis, distillation, and resin softening has not only removed the harmful chemicals, bacteria and viruses to the human body, but also removed the people from the human body. It is not conducive to long-term drinking of pure water (some also known as space water). 2.质监局专家称，购买桶装水购买时要先看水桶是否晶莹透明。质量较好的桶(瓶)应由PC材质制成，桶体透明度高，表面光滑清亮，而使用或添加回收废旧垃圾塑料为原料制成的桶，俗称“黑桶”，颜色发黑、发暗，透明性差。而水桶盖应鲜亮光洁，硬度较高。 2. Quality Supervision Bureau experts said that when buying bottled water, it is necessary to see whether the bucket is crystal clear. The better barrel (bottle) should be made of PC material, with high transparency and smooth surface, and the use or addition of recycled waste plastic as raw material, commonly known as "black bucket", black, dark, and poor transparency. And the bucket cover should be bright and clean, and the hardness is high.