The company has developed and produced various types of top coal support, and has formed a series. The forms of support include: four-column top coal caving, two-column top
coal caving, light top coal caving; The stability mechanism consists of a single pendulum rod, a positive four link rod and a reverse four link rod.
Top coal discharge hydraulic support features: stable support, continuous coal discharge port, less back loss, good coal discharge effect. The exploitation of thick coal seam has
less investment and quick effect. The road is used for thick coal seams with joint and fissure interbreeding obvious or good.
