Smooth edge- Smooth edge prevent your file and safe to use. Variety colors- We have 4 different sets to choose from (assorted, or  green/orange/blue/purple) so go choose your favorite and clip your world in vibrant fun! Clean, tidy and professional- It may seem strange thinking about ‘cleaning’ a board, but somehow lunch and coffee always ends up on our work, right? So, with our PP board you can just wipe it clean! And unlike vinyl clipboards the edges won’t rip, exposing ugly frayed cardboard! Now you can hang your students work, meet clients, coach sports, and color code your busy life with a professional edge! Multifunctional- The binder board folder works great for anything from medical forms to work applications or inventory sheets. Write comfortably from anywhere—no desk needed. Suitable for indoor or outdoor use. Also, with rounded corners and smooth edges, kids are safe to use these boards with reckless frivolity! Technological process- Prenatal test plate–Material cutting–Release of material–Glue–High frequency–Packing Quality control- Materials check&qualified- Workshop QC check- Production inspector check- Finished supervisor check- Warehouse manager check- AQL check