Cable signs coal mine coal is a common indication signs, has a strong indication. Cable for coal mine fire signs in terms of using aluminum as the main raw material, production stamping by abrasive machining, convenient to install, easy to carry coal signs classification, long service life, good reflective effect. And the coal mine can be a simple and effective cable signs showing the specific location of the cable and the cable and the cable directly to the specific role of the person in charge of coal mine signs that can warn miners not to damage the cable and equipment, can prevent malicious access and loss, increase utilization, effectively improve the efficiency of the staff. Coal reflective signs need to choose the direction-sensitive material: in accordance with the coefficient of retroreflection measurement method high mine signs, while at 0 ° and 90 °, wherein an angle of rotation test conditions, the retroreflective coefficient of the direction-sensitive material should be separately R7 comply with the requirements of single properties of materials and the same combination of properties of materials; when measured at another rotation angle conditions, the inverse reflection coefficient R 7 may not be less than 75% single material or a combination of material properties corresponding predetermined value. Mine signs Category | Yu Po signs (certified) |. Mine signs provided by Changyuan Yu Po signs Limited. Changyuan Yu Po signs Ltd. (www.hnypbp.com) Henan Xinxiang, nameplate leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Yu Po sign in leadership with the staff warmly welcome all inquiries negotiations to create Yu Po signs a better future.