... and above, highly efficient and its cleanliness is 4 times that of manual cleaning.7.stainless steel made, durable and ... system. it uses uvo3 that its sterilizing power is 2 times higher than ozone sterilizing, more hygienic and safe. those ... we are ?Welcome to Ningbo LIFEWELL Environmental Technology Co., Ltd, part of Ningbo Yongfa Imp.& Exp. Co., Ltd , subsidiaries of Ningbo Safewell Group, located ...