SPD Protector significantly increases concrete’s resistance to stains, acid etching, and liquid penetration. It features a two-part, water-based modified polymer blended into colloidal silica. It penetrates and seals concrete surfaces with a breathable matrix as thin as 1 mil. On polished concrete, the product provides 24-hour protection from food stains, oil, brake fluid, and muratic acid. The product leaves a cleanable, burnished finish like polished concrete while increasing the concrete slab’s surface abrasion resistance and surface coefficient of friction. Lythic Solutions Inc. 888-598-4421. www.lythic.net