Water‑based Thin‑Film Intumescent Fire‑Protective Coating for Steel Structure WFS‑101 Introduction: WFS‑101 Water‑based Thin‑Film Intumescent Fire‑Protective Coating for Steel Structure is an eco‑friendly fire‑protection material dedicated to steel structural members. Formulated with modified acrylic polymer and multi‑component intumescent fire retardant system, this coating is water‑dilutable without additional organic solvents. When exposed to flame and high temperature, it