Asahi Kasei Corporation is increasing the prices of the following products for all overseas shipments, effective from 16 April 2018.
| Products | Price increase |
| Polybutadiene rubber (Asadene, Asaprene) | +USD 250/+EUR 200 per tonne |
| Non-oil extended S-SBR (Tufdene, Asaprene) | +USD 250/+EUR 200 per tonne |
| Oil-extended S-SBR (Tufdene) | +USD 250/+EUR 200 per tonne |
| Clear styrenic copolymer (Asaflex) | +USD 200/+EUR 150 per tonne |
| Styrenic TPE (Tufprene, Asaprene T) | +USD 250/+EUR 200 per tonne |
| Hydrogenated styrenic TPE (Tuftec, S.O.E.) | +USD 250/+EUR 200 per tonne |