Diameter of 230mm and 200mm wafer shape specification. 
 Flannel on the back is set to: (1) ordinary (non-adhesive) (2) with the paste back (PSA) 


 Origin: domestic and imported (U.S.) 


 Imported wear velvet polishing cloth: 
 Bright brown, medium velvet polishing cloth, fluff density medium for 1 to 0.10-micron diamond or alumina polishing abrasive polishing cloth as a wider range of material polished with ordinary polishing cloth, has a longer life than the ordinary type polishing cloth can be used as the final polishing purposes. 

 Ordinary domestic velvet polishing cloth: 
 Dark brown medium hair fabric, fluff density medium for 1 to 0.25-micron diamond or alumina polishing abrasive polishing cloth, as a wider range of material polished with ordinary polishing cloth can be used as final polishing purposes.