Semicorex has been producing al nitride;aln material;aln al2o3;aln ceramic;insulator ring;Ceramic Sealing Rings;Sealing Rings;heat treatment;high frequency heat treatment;Semiconductor Industry for many years and is one of the professional al nitride;aln material;aln al2o3;aln ceramic;insulator ring;Ceramic Sealing Rings;Sealing Rings;heat treatment;high frequency heat treatment;Semiconductor Industry manufacturers and Suppliers in China. Once you buy our advanced and durable products which supply bulk packing, we guarantee the large quantity in quick delivery. Over the years, we have provided customers with customized service. Customers are satisfied with our products and excellent service. We sincerely look forward to becoming your reliable long-term business partner! Welcome to buy products from our factory.