Polyisobutylene additive, polymers modifier additive, uv masterbatch, silver masterbatch, black masterbatch, white masterbatch, ppa masterbatch , slip masterbatch, antistatic masterbatch, antifog masterbatch, antioxidant masterbatch, anti moisture masterbatch, fire retardant compound, anti block additives, elastomeric additive mb, colors masterbatch, optical brightener mb, polymers powder, filler compound talc.