Guanzhu, samit, Huiwanjia. According to the brand website, New Pearl Group is one of the largest professional manufacturers of building ceramics products in China, with several well-known brands including Guanzhu, Sanmei and New Pearl Rock Plate. Its main products are ceramic tiles (including glazed tiles, antique tiles, polished tiles, ceramic tiles, etc. ) and ceramic plates (including ceramic rock plates, ceramic thin plates, ceramic plates, etc. ).