LDQ-400 is a kind of full automatic and high precision cutting machine. It adopts SIEMENS PLC and features high reliability and controlling ability. It has touch screen HMI control interface and high accuracy stepping motor. This machine is suitable for precise cutting for all kinds of metal and non-metal materials and can get precise sample for metallographic and lithofacies organizations. This machine includes cutting system, lighting system, cooling system and cleaning system. Super cooling system can avoid specimen from burning while cutting. LDQ-400 applies automatic cutting with low noise and convenient, safe and reliable operation. It is the ideal option for colleges, laboratories, car manufacturing, steel manufactories, material research institutes and so on.