Billiards resin SL-58A system with high-grade billiard unsaturated polyester resin, the viscosity is moderate, moderate reactivity, completely curing speed ... , for in the outer layer of high-grade component billiards or bowling alley.SL-58A . SL-58AP series high ... SL-58B system with a common pool of unsaturated polyester resin, the viscosity is moderate, moderate reactivity, manufactures high hardness ...