Cascell? structural foam is 100% closed-cell, rigid polymethacrylimide(PMI)foam, its application fields are as follows: Cascell? WH aerospace structural core material, like rocket fairing, aircraft elevator, wing rafter. Cascell? RS similar to WH, aerospace structural core material, more suitable for liquid resin forming technology； Cascell? HF High frequency and wave type, especially suitable for radar, antenna cover, such as phased array radar； Cascell? IH industrial grade PMI foam, outstanding high cost performance, such as high-speed railway, medical bed board, sports equipment and so on; Cascell? FR Flame retardant PMI foam, combine with high performance and high penetration wave, such as radome, aviation interior, ship, etc;