1. Type: N220 ,N330,N550,N660. 2. Cas no:1333-86-4 3. Place of origin: china 4. Standard: GB 3778-2003 5. Form: black granule or powder 6.Process: wet or dry process 7. Usage: maily applied to various rubber products such as tyres, rubber overshoes, cable, seal ring, tape etc. Moreover they can be applied to such relevant industries as plastic manufacture