Does anyone know how to say it? How is the quality of Opel cabinets?

Good quality. My house has an Oprah Winfrey cupboard. The cabinets are made of practical particle boards with dense edges, moisture-proof and good environmental protection. According to the staff, the fire-retardant finishes on both sides of the door panel are fireproof, moisture-proof, durable and safe. Moreover, the materials of cabinet hardware feel thick and open and close smoothly. I've used it for several years, and there's never been a case where the cabinet doesn't open and close smoothly. In fact, oprah winfrey is a luxury fashion brand of Oupai Group, with excellent product quality and service and many styles. I found some pictures in official website, all of which are very nice.