December in 2016, after 500-day continuous and stable operations of the products in Daqing and Shengli Oilfields respectively, the product demonstrated its compliance with the users' requirements, for which they issued a User Report, and the company became eligible for mass production and supply.
Started batch manufacturing continued the down-hole field testing, and meanwhile set about the formulation of technical standards for manufacturing and testing;
Carried out an experimental well test of the 4th generation prototype and completed the verification of overall reliability of the product;
Carried out a test of the 3th generation prototype in a HT HP homeostasis experimental well and improved its down-hole insulation sealing technology;
Carried out an experimental well test of the 2th generation prototype to verify and improve the system's down-hole insulation sealing;
Developed and improved the software platform and carried out a down-hole test of the system for the first time;
Succeeded in laboratory verification of the working principle and a prototype run；