However, just like breakfast, lunch and dinner, the diet really varies because of the different body physiology. There is such a demand for health, so the mask is also like this. Medical use is different from civil use, but it is actually produced and purchased in the same factory. Nursing, surgical and non-surgical, only lies in the person who uses this mask. The same batch of masks imported by the hospital are distributed to surgeons and nurses, just like sweeping the floor. So whoever brought it is his. Go to the same department to get the same bag.
But when buying, you should ask what you want, because when medical products are used as commodities, you can't add high-end and luxury. Suit, high quality. Use these instructions to raise the price. So the products produced by the same factory. The same product can be packed in different packaging bags. Disposable use and reuse are also the real difference between cost and function, that is, the difference between sex and reuse.
Emphasize the model, this is actually an intellectual property issue, that is, you have to pay copyright fees to produce this model. If the current mainstream copyright is replaced by 5G99, everyone says that it is good, but these can't deny the existence and efficacy of the previous products, which are essentially irrelevant to users. So it's the same as eating. If you buy the same batch of rice and buy it in a restaurant, you will get different prices and tastes.
The difference is that you wear a mask, no matter which one is unobstructed, the difference is that. You will pay different prices for different names. In the state that more and more people think that cheap drugs may not cure diseases, brands and models have become choices, as if it is useless to choose other scales and models. In fact, the sun in the world is the same.