Engineering Ceramic Co., Ltd (EC®) is a professional manufacturers and suppliers of Feed Through Insulators( Alumina 99.7% or Alumina Alsint 799 ) in China. Under the high quality control system and technical team hard work, our Feed Through Insulatorscould be made high-temperature sensor feedthroughs which deliver unparalleled protection and performance for sensors in extreme temperatures of 1800°C and above. Made using a unique combination of materials and state-of-the-art sealing technology, they enable next-generation sensor designs. Our products were sold in worldwide market with a good reputation.