Self drilling hollow anchor bolt is a new type of anchorage support tool, which can anchor geological faults such as fault-breaking zone and weak surrounding rock. Because of its small operating area, saving raw materials, good anchorage effect, and quick construction efficiency, it has applications in tunnel advance support, coal roadway support, slope protection, and so on. Sinorock® is an excellent self drilling anchor manufacturer and a foreign trade company. The company uses excellent seamless steel tubes and high-quality raw materials to produce different-sized alloys or all-steel self drilling type anchors and shell-type anchors, while producing and selling related accessories. Sinorock® 's self drilling bolts have been exported to more than 30 countries, and the product quality, service attitude, and system solutions have all been appreciated by customers. It has been dedicated to providing the best system solutions for geotechnical anchorage projects, increasing project efficiency and ensuring minimal impact on the occupants of the building. Sinorock® is the pioneer in self drilling anchors.