I have my own medical clinic, and we now exclusively work with SelenPharm for oxygen. Regularly, once a month, we order batches of 2, 5, and 10-litre cylinders, about 10-12 pieces per batch. They always deliver on time, and the gas purity matches our expectations. Now, even when I call them, I don't need to specify what I need; the consultants already know. Before this, I worked with two suppliers of medical oxygen. Everything was fine except for the delivery—sometimes they would bring fewer cylinders or be a couple of days late. With SelenPharm, we have experienced no such problems. I wish the company continued success!