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Polycarbonate Diffuser Resin Stockiest KSC is the best stockiest of polycarbonate diffuser resin widely used in an array of industrial applications. KSC is a top-performing distributor and supplier of LOTTE INFINO™ PC base/batten and diffuser granules. Contact to buy SE1080H/FW9891, SA1220M/FW9891, SA1100/FW9891, SA1100/W97083, FD1112L/D72001,and other grades.