Diode laser technology is designed for the personalized production, especially the 3d human face / 3d portrait engraving market. The integrative controlling technology of x-y-z worktable and galvanometer is adopted to improve the laser processing efficiency. High frequency laser and galvanometer motion system guarantee the high laser engraving speed. Joint-block control engraving technology of block to block enlarges the engraving area. This machine meets the requirement of large engraving area, high speed personalized production. Long laser lifetime guarantee reaches over 8000 hours. No maintenance and consumables for the diode laser is needed during its lifetime. It avoids changing the xenon lamp and adjusting the laser route often as the lamp pumped laser. Automatic location technology for crystals improves the position accuracy and shortens the position time of crystals on the worktable. Particular frequency-selecting technology assures laser-output-times/dot reaches 100%, no dot missing and dot-deviation. Lead screw with high precision and intensity improves the location accuracy and stability. The automatic monitoring system of temperature ensures the working order of the machine. Interlock device on the door supply the safeguard for the operator. Four kinds of point-cloud converting methods are supplied in the software to obtain different engraving effect. Exceptionally small engraved dots represent lively the engraved graphics especially the 3d human face.