So if you are looking for crushers or mills, STK deserves your attention! More About CNcrusher. 600,000 m2 of Production Bases. By 2016, STK has built 6 worldclass manufacture bases, which cover a total area of over 600,000m2, and accomplished an annual production value of RMB 5 billion. ... نفت آفریقای جنوبی را ...