| http://www.w3.org/ns/prov#value | - Conveniently, an extrudable composition can be prepared by placing an amount of resin, preferably a polyvinyl chloride resin (PVC resin) into a blending apparatus, adding in turn the reinforcing constituent(s), the desired supplemental additive constituents, for example, stabilizers, fillers, processing aids, colorants, and pigments, and other ingredients desired in the composition, and adding to
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