Chiwonetsero cha 23 cha China International Petroleum & Petrochemical Technology ndi Zida

The 23^rdChina International Petroleum & Petrochemical Technology ndi Zida Exhibition

wakhala wangwiro ku Beijing, chifukwa makasitomala athu kuzindikira khalidwe lathu ndi utumiki.

Ndife ogulitsa anu odalirika ku China. ndipo mwalandilidwa kukaona Wuhan Ninestones.