... fine and smooth.2. Light dead weight, resilient, good mechanical strength, comfortable touch feeling , wear-resistant , ... corrosion resistant, adjective, soundproof, damp proof, weak hygroscopicity, good insulation, self-extinguishing , easy to clean, simple to construct, ... C GradeCommon Grade Notice:Before ordering or Enquiry, Please tell me the specifications: Grades, thickness, width, length, etc. ...