Mpempe akwụkwọ ndị mejupụtara maka nyocha ala ala na ogbunigwe coal
Wuhan Ninestones Superabrasives Co., Ltd na-enye kọmpat diamond dị elu maka geology na coal mines, n'etiti nke MP series flat-arc compacts na M series planar compacts na-ọtụtụ ebe na geological exploration drills, isi drills, nkume bolts na ndị ọzọ ubi.
