Specialize in research , development & optical materials Refractories, Refractory tiles, Shaped refractories, Castables, Polyphenylene oxide PPO, Polyphenylene Sulfide PPS, Polystyrene PS, High Impact Polystyrene HIPS, Polysulfone PSU, Rigid Thermoplastic Polyurethane RPTU, Polyvinyl Chloride PVC