The urea-formaldehyde cover is made of raw materials that are ground into powder and then formed by high temperature and high pressure. The toilet cover of this material is relatively strong in terms of wear resistance and scratch resistance, and it is also easy to clean during use. Generally, toilet covers of this material are used On high-quality toilets, the appearance is smoother and porcelain-like, the color is stable, firm, and has a long service life. http://www.beewill.com/toilet-seat/pp-toilet-seats/