GRP Composite Sandwich Panel Manufacturer in China

What is GRP Sheet?

GRP (Glass Fiber Reinforced Plastic) is a composite material consisting of a base material and a reinforcement. The matrix of GRP material is resin, which acts as a binder, accounting for 30% to 40% of the total volume. Resin is a thermosetting plastic, including epoxy resin (EP), phenolic resin (PF), etc., and resin is also an organic non-metallic material. The reinforcement of GRP material is glass fiber, which is an inorganic non-metallic man-made inorganic fiber. GRP materials have good electrical insulation and bonding properties, as well as high mechanical strength and heat resistance.

Basic Structure of GRP Composite Panel

GRP sheets can be laminated with various core materials by hot melt or adhesive to form composite panels. GRP composite panels have replaced metal materials and wood in many fields.

  • GRP Type: thermosetting FRP, thermoplastic FRP (CFRT)
  • Core Type: foam core (XPS/PET/PVC/PU/EPP); honeycomb core (PP); plywood; balsa, etc.

Advantages of GRP Composite Panels

  • Sturdy
  • Lightweight
  • Waterproof
  • Preservative
  • Easy To Cut


GRP composite panels are widely used in construction, automotive, sports and other fields. It brings great convenience to people’s life, At the same time, it also greatly reduces the cost of industrial production.

Building Wall Panels

GRP Sandwich Panel Products

GRP Sandwich Panel Manufacturer – TOPOLO

TOPOLO produces GRP composite sandwich panels with foam core, honeycomb core, plywood core, balsa core, etc, and can customize width, thickness, density and other specifications according to customer needs.