| No | 
                        Parts No. | 
                        Abrasion resistance range | 
                        Features | 
                        Usage | 
                    
                    
                        | 1 | 
                        ZR2S | 
                        65-130 | 
                        Strong cutting force | 
                        Resin bonded, second process | 
                    
                    
                        | 2 | 
                        ZR3S | 
                        70-150 | 
                        Good surface shape, suitable for large-diameter lenses | 
                        Resin bonded, second process | 
                    
                    
                        | 3 | 
                        ZR7S,K | 
                        100-180 | 
                        Good surface shape and surface accuracy | 
                        Resin bonded, second process | 
                    
                    
                        | 4 | 
                        ZR707S | 
                        130-220 | 
                        Strong cutting force, suitable for soft material | 
                        Resin bonded, second process | 
                    
                    
                        | 5 | 
                        ZRT30S | 
                        70-200 | 
                        Good cutting force, suitable for large-diameter lenses | 
                        Resin bonded, second process | 
                    
                    
                        | 6 | 
                        ZR465S | 
                        240-410 | 
                        Specialized for super-soft material | 
                        Resin bonded, second process | 
                    
                    
                        | 7 | 
                        ZR612 | 
                        400以上 | 
                        Specialized for super-soft material | 
                        Resin bonded, second process | 
                    
                    
                        | 8 | 
                        ZM10H | 
                        80-150 | 
                        Suitable for fluorine-containing material | 
                        Metal bonded, first process | 
                    
                    
                        | 9 | 
                        ZM20H | 
                        80-180 | 
                        Good abrasion resistance | 
                        Metal bonded, first process | 
                    
                    
                        | 10 | 
                        ZM21S | 
                        150-410 | 
                        Suitable for soft material | 
                        Metal bonded, first process | 
                    
                    
                        | 11 | 
                        ZM22H | 
                        100-300 | 
                        Strong cutting force, suitable for soft material | 
                        Metal bonded, first process | 
                    
                    
                        | 12 | 
                        ZM24H | 
                        70-150 | 
                        General usage, hard material | 
                        Metal bonded, first process | 
                    
                    
                        | 13 | 
                        ZM26H | 
                        160-320 | 
                        Good stability, soft material | 
                        Metal bonded, first process | 
                    
                    
                        | 14 | 
                        ZM28H | 
                        70-150 | 
                        Good abrasion resistance, medium hard material | 
                        Metal bonded, first process | 
                    
                    
                        | 15 | 
                        ZM30H | 
                        70-150 | 
                        Good abrasion resistance, medium hard material | 
                        Metal bonded, first process |