Ceramic Sharpener: 1.High hardness 2.Durable, Easy to Use 3.ISO9001, ... : USA, Europe, Asia 1, About JOHNCERA Ceramic SharpenerThe main part of Ceramic sharpener is made of alumina ceramic with high hardness, wear resistance, It ... quality product for our client.Advantage: Our products contain the ceramic knife, ceramic scissors, ceramic peeler and other application in large quantity, and they ...