Sell Coumarone petroleum resin Coumaronepetroleum resinCoumaronepetroleum resin is obtained from polymerizing heavy aromatics C9 fraction,by-product of
2019-09-03
Sell C9 Dark Color petroleum resin Puyang Jiteng Chemical Co.,ltd. sell high qualtiyC9 Dark Color petroleum resin for rubber,tire industrires.Keywords:petr