1)professional manufacturer of PDC cutters 2)excellent wear resistance 3)high impact resistance 4)good thermal stability The proprietary product—GK PDC GK PDC cutter is a Chinese name “Gang Kui” for short, it looks like a helmet. It features higher impact ressistance. With high speed, fix good, long service time, when drilling using the GK products. It is not only useful in homogeneous strata, ...