https://www.lowes.com/pd/Krystal-Pure-Under-Sink-Complete-Filtration-System-with-Reverse-Osmosis-Filtration/3548972
朋友说,Amazon的这个也不错:
https://www.amazon.com/Express-Water-Alkaline-Antioxidant-Filtration/dp/B00MU2HYXM/ref=sr_1_1?s=hi&ie=UTF8&qid=1497287674&sr=1-1-spons&keywords=reverse+osmosis+water+filtration+system&psc=1