I. Product Introduction:
SMC insulation board is a sheet-form product available in a variety of colors, manufactured via a compression molding process using unsaturated polyester glass fiber-reinforced sheet molding compound (SMC). “SMC” stands for “Sheet Molding Compound.” Its primary raw materials include glass fiber roving (GF), unsaturated resin (UP), low-shrinkage additives, fillers (MD), and various auxiliary agents.
What is SMC?
SMC is a composite material composed of glass fiber, resin, fillers, and other ingredients. Its structure resembles a layer cake; it is molded under high temperature and high pressure to form a sturdy sheet, typically 2 to 4 millimeters thick.

II. Product Characteristics
SMC insulation boards feature high mechanical strength, excellent flame retardancy, and superior tracking resistance (second only to UPM203). Additionally, they offer high arc resistance, dielectric strength, and voltage withstand capabilities, alongside low water absorption, excellent dimensional stability, and minimal warping.
These products are primarily used as insulation barriers within high-, medium-, and low-voltage switchgear. Leveraging the outstanding properties of SMC composite materials, they effectively overcome the inherent flaws of traditional wooden, steel, and plastic meter boxes—specifically issues such as susceptibility to aging and corrosion, poor insulation, low cold resistance, inadequate flame retardancy, and short service life. SMC meter boxes deliver exceptional performance, offering excellent sealing, waterproofing, corrosion resistance, and anti-theft capabilities; furthermore, they require no grounding wire. They feature an attractive appearance and are equipped with secure locking mechanisms and provisions for lead seals, ensuring a long service life. SMC distribution boxes and meter boxes are widely used in the modernization and upgrading of urban and rural power grids.

III. Technical Parameters:

IV. Product Application
Applications in high and low voltage switchgear: insulating partitions.
Automotive industry applications: suspension components, front and rear bumpers, dashboards, air conditioning housings, air ducts, intake manifold covers, fan covers, heater covers, and radiator components. Railways
Vehicle applications: window frames, toilet modules, seats, desktops, SMC interior wall panels, and SMC ceilings.
Applications in building engineering: water tanks, sanitary ware, septic tanks, building formwork, and storage tank components.
Applications in the electrical and communications industries: electrical enclosures (including switch boxes, SMC junction boxes, instrument panel covers, etc.); and electrical components (such as SMC insulators, insulating tools, motor end caps, etc.).