orthophthalic type unsaturated polyester resin, It has medium viscosity and high reactivity. High strength, good toughness, not easy to crack, excellent wear resistance, fast curing, suitable for making crystal millstone products.

promoted orthophthalic unsaturated polyester resin have low viscosity and moderate reactivity. They boast high strength, good toughness and are not easy to crack, with fast post-curing, easy demolding and excellent air-drying performance. They are applied to polished abrasive products.

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