Currently on the market use foam board (polystyrene board) about these types of species: a: Press flame retardant classification: 1, ordinary type of foam board (flammable), also known as ordinary polystyrene board. 2, B2 retardant foam (flammable) b2 grade polystyrene board. 3, B1 retardant foam board, (flame retardant) b1 grade polystyrene board. No matter what kind of final are not non-combustible, flame retardant and non-combustible hope that we distinguish between the two concepts. Two: by density classification: 1, first class density greater than or equal to 15 kg, less than 20 kg. The second category, approximately equal to 20 kg less than 30 kg, the third category: not less than 30 kg less than 40 kg. The fourth category, greater than or equal 40 kg less than 50 kg and so on. White object B1 polystyrene foam board, B1 grade polystyrene board, which is composed of a volatile liquid blowing agent containing polystyrene particles and special additives, heated advance in the mold foam molding . B1 grade closed-cell polystyrene board has the characteristics of the fine structure and B1 retardant effect; B1 grade polystyrene board is mainly used for building wall insulation, roof insulation, composite board insulation, refrigerator, air conditioning, vehicles, ships , floor heating, decorating carving, very versatile. Advantages Class B1 B1 level polystyrene board polystyrene board with light, heat insulation, low temperature resistance, good flame retardant properties, there is a certain degree of flexibility, minimal water absorption. B1 grade poly board exterior insulation system with excellent insulation properties, good water resistance and compressive strength, impact resistance, and can effectively solve the problem of cracking and leaking water wall. B1 grade poly board exterior insulation system to avoid thermal bridges in winter can greatly reduce indoor heat loss through exterior walls; B1 grade poly board exterior insulation and finish systems can greatly reduce summer facades by solar radiation and heat conduction to the interior, thereby enabling the heating, air conditioning energy consumption decreased. B1 grade poly board EIFS wall light weight, energy-saving effect, can reduce energy consumption and protect the main structure, but also to extend the life of the building. B1 grade poly board exterior insulation system for a building covered with a warm, reliable and durable coat, the majority of real estate developers, building design and energy-saving insulation construction unit of choice for insulation system. With the development of building energy efficiency, and its excellent performance gradually accepted by the market, energy-efficient building will become the future direction of development. Polystyrene board Main Specifications: density range: 15-30kg / m3 length: 1000-6000mm width: 200-1230mm Thickness range: 10-1230mm specific procurement criteria, please call the merchant, detailed communication, sincere cooperation!