1.plastic transmission gears 2.ISO9001:2008 certification 3.PA,PP,POM,PC,PE,Nylon,PVC, ABS,PA6,PA66 material 4.Big output High Quality Plastic Transmission Gear for masssger Characteristic1. acid and alkali corrosion resistance2. high precision 3. excellent wear-resistance4. inherent low flammability5. good viscidity,flexibility,alkaline resistance6. good electrical insulation ...