Product overview The ternary f c ingredient is ENB and DCPD in collagen. Three yuan is the most widely used YiBingZhong ENB, it's much faster than DCPD sulfide product. Under the condition of the same aggregate, the nature of the third monomer influence of long chain branched, increasing in the following order: EPM < EPDM (ENB) < EPDM (DCPD) EPDM is ethylene, propylene and a small amount of conjugated diene copolymer by. Epdm seal ingredients: 1. The epdm collagen 2. Promoter (3) high wear-resistant carbon black 4. 5. Oil light calcium and so on。