Henan Tianzhiwo Machinery Co., Ltd are specialist manufacturers about Well Screens and Filters . They are widely used for water, oil and gas wells in the world. As China chief manufacturer and exporter, we export good quality water well screen to many countries. Main products cover bridge slot screen, wire wrapped well screen, stainless steel Johnson screen, water well screen, wedge wire screen, sieve bend screen, Johnson tube and sand control screen. In addition, we also offer perforated pipes and base pipes for well screen and Johnson screen. Welcome you come to TIANZHIWO!