The series products of Si₃N₄^D is dense Si₃N₄ ceramic, which have excellent properties such as high thermal conductivity, toughness, strength, dielectric strength, temperature resistance, thermal shock resistance, corrosion resistance, oxidation resistance, self-lubrication, etc. The specific properties of Si₃N₄^D are shown in Table 2.4. 

It is mainly used for high thermal conductivity substrates and ceramic components in the fields of high-speed rail, electric vehicles, charging piles, electric power, electronics, light sources, etc. It can also be used as valves, bearings, tools, plungers, housings and seals in the mechanical field.