1. PP (Polypropylene) Bristles
Key Characteristics: Cost-effective and durable.
Application: Designed for cleaning regular hard surfaces.
Advantage: PP serves as an economical alternative to other bristle materials, balancing performance and budget.
2. PA (Nylon) Bristles
Key Characteristics: Boasts greater flexibility and a softer texture compared to PP bristles.
Application: Suitable for carpet extraction and cleaning, as its softness prevents damage to carpet fibers while ensuring effective dirt removal.
3. Silicone Carbide-Impregnated Nylon Bristles

Key Characteristics: A high-performance option—As the nylon bristles wear down, the embedded silicone carbide is continuously exposed. This unique design extends the brush’s service life and maintains consistent, excellent cleaning performance.
Application: Ideal for a wide range of tough cleaning scenarios, including heavily oiled concrete, epoxy floors, PVC surfaces, and ceramic surfaces.