Due to the different types of graphite ore, the industrial requirements are different. The crystal flake graphite has good selectivity and low requirements on the ore grade. Generally, the industrial grade can be achieved at 2.5% or more. However, due to poor selectivity, cryptocrystalline graphite has high requirements on the ore grade, and generally requires more than 65-80% to be directly utilized. At present, the general industrial requirements for graphite deposits in China are shown in Table 1. Laser range sensors combine the advantages of a visible red sensing beam with the increased range of a laser. The optical Distance Sensor devices are Class 2 lasers, support Class 1 customized. The high precision autonics distance sensor is successfully be used to connect to Arduino, Raspberry Pi, with +-1mm to 3mm high accuray, and long-range solutions (max up to 150m) for your application. High Precision Distance Sensor Precision Distance Sensor,Precision Laser Distance Sensor ,Precision Distance Sensor Laser,Accurate Laser Distance Sensor Chengdu JRT Meter Technology Co., Ltd , https://www.jrt-measure.com