... a wide range,surface smooth, durable4. Advantage precision double etching, smooth surface on both edges, no embossment,no convex- ... -1.2mmmax length 60cm max width 50cm7. Producing processFeeding→etching → recycle water washing→urban water washing →bolt up→ ... mobile keyboard,precise filter, shaped wire mesh, nameplate, juice machine filter, precise electronics parts,anit-insect net ,metal crafts etc ...