We purchased PPE only after medical institutions were contacted. After determining that they did indeed lack supplies, we ordered PPE. For all items and protection level, we communicated with each institution in advance.

我们所购买的物资都是提前和医疗机构联系好了，并且确定了他们物资有缺乏后才去购买的。不管是购买的物资的种类还是防护等级都是已经提前沟通好的。