The article forecasts the prospects of petro-chemical technical progress at home and abroad in the early 21 century and put forward a new thought of strengthening directional basic research and developing the petro-chemical technics with Chinese characteristic.

As a complex competence system, the core competitive power of petroleum technology service enterprises consists of 18 factors, such as enterprise culture, R & D investment, core technology, and so on, which make the relationships among those factors more complex.

Study of Huian stonemason and stone skill;