A. High transmission speed; low demand to drilling medium; real-time transmission without depending on pump switching;
B. More convenient for two-way transmission;
C. No mechanical motion parts and more reliable;
D. Simple product structure and easy to operate at site;
E. High temperature resistance of 175℃ and high pressure resistance of 150 Mpa;
F. Available for connection to electricity resistivity and near bit instrument;
G. applicable to most environment, borehole with 4-1/8”~17-1/2”;
H. Specification of 3.5”, 4.75”and 6.75”.