Aremco Products Inc., Valley Cottage, N.Y., introduced technical bulletin A1 that describes its complete range of technical ceramics for applications to 3000¿C (5430¿F). Several standard machinable and fully fired compositions are offered including aluminum oxide, aluminum nitride, aluminum silicate, boron nitride, glass ceramic, magnesium oxide and zirconium phosphate. Typical applications include gas combustion nozzles, thermal and electrical insulators, substrates for thick-film microelectronics, molten metal crucibles and hot die parts for thermoplastic forming equipment.