I'm glad to have an opportunity to know you. Your work looks very interesting. I have been working as geologists here you probably have a lot of experience in mining. I would like to ask, share, and learn from your experience.
การแปล กรุณารอสักครู่..
![](//thimg.ilovetranslation.com/pic/loading_3.gif?v=b9814dd30c1d7c59_8619)