Zhejiang Shangguijuli Special Material Technology Co., Ltd. is a leading manufacturer specializing in R&D and production of high-performance silicon nitride ceramic material in China. With the advanced production process of silicon nitride ceramic and precision machining technology, we provide professional and most suitable solution of silicon nitride material for customers in the field of advanced equipment,new energy, electric vehicles, aerospace etc. SG-28, a new silicon nitride material for the aluminum industry developed by us, its thermal and mechanical properties have been significantly improved over similar products, especially our L-type high thermal conductivity diving heater R&D based on SG-28, it will bring revolutionary progress to the aluminum industry equipment. Main products: silicon nitride heater protection tube, riser tube, degassing rotor, thermocouple protection tube, stopper pipe ,silicon nitride component,silicon nitride stalk