Got asthma, need to do long-term nebulization, please recommend a home portable nebulizer?

My mom's previous work environment is not very good, resulting in asthma, I look also difficult. The doctor said that need to do long-term nebulization, asthma patients do nebulizer inhalation therapy is better, so you can relieve a lot. I then bought my mom a PARI silent portable membrane shock nebulizer Velox, you can always do nebulization at home lying down. They have membrane shock technology, ultra-fine fog particles, fast and direct to the lower respiratory tract, airways, alveoli, so that the medicine is more easily absorbed.