Sigma new developed 2600 ultra-high-temperature ceramic sintering furnace, 2400 ultra-high-temperature vacuum atmosphere tube furnace, 2400 induction smelting furnace, 1600 crucible smelting furnace, 2600vacuum induction hot-pressed furnace, 2600ultra-high-temperature softening-point determinator, 2600 ultra-high-temperature melting-point tester, anti-thermal shock test furnace and 2600 ultra-high-temperature thermal shock furnace have been broadly applied to industrial and mining establishments and scientific research institutes. We also product sintering and combustion analyzer, thermal gravimetric analyzer, ultra-high-temperature heating elements, ultra-high-temperature thermocouple, thermocouple checking furnace, artificial intelligent box furnace, 1000, 1200, 1600, 1350, 1600, 1700, 1800 high-temperature box furnace, 2600 ultra-high-temperature heating furnace, bell-type furnace, vacuum atmosphere box resistance furnace, vacuum atmosphere tube resistance furnace, vacuum smelting furnace and so on.