Established in 2002, Qingdao Zitn Microelectronics Co.,ltd is dedicated to design, develop and manufacture high-end sensor and thick film hybrid integrated circuits for oil and gas energy, especailly for MWD, LWD, DD, wireline logging equipments. Zitn products are alo been widely used on aerospace, military and defense fields. Main products: 1. 175℃ Directional Sensor 2. 185℃ Quartz Flexible Accelerometer 3. 250℃ Liner Voltage Regulator Module 4. 200℃ Pad Acquisition Module for Micro Imager Tool   5. 175℃ 4GB NAND Flash Memory Main customers: CASC CASIC CSIC AVIC CNIGC CSIC CETC CNPC CNOOC, Sinopec Chinese Academy of Sciences etc ZITN quality is aerospace quality, ZITN standard is state military standard.