We often understand emerald friends say: "Good material with a good work, harder it grows," and so on, that's mean, even the best material is not given to the process of creation, it's just not the stone of life only. Because the quality of a material is ultimately reflected in the design plus carving master. Plus cotton, cracked, dirty, kind, color and so on the characteristics of the raw material itself, very often, design, carving determines the quality of the value of the work itself. For today's soaring raw jade, some carving fees are often more expensive than the raw materials, so he derived from the end of the cost ultrasonic pressing and computer engraving machine and so on processing methods. This time explore ultrasound, computer engraving machine, modify, distinguish hand-carved by hand engraving machine, because a lot of friends like Jade finished often encounter this kind, it is dedicated to gather some information, learning to communicate with friends ! First know about, ultrasound, computer, hand tools essential difference: Ultrasonic repression: Ultrasound is a certain mold, machine pressed on it, the same as the seal. Computer machine carving: Machine carving is a certain template, engraving machines need to repeat over and over again, the same as the work. Machine and hand engraving difference: engraving machine Features: Edge unified, very flat, not to the concave curvature of the hand-carved features: edge to the concave curvature of the machine and hand engraving contrast characteristics: relatively small engraving machine tool computer, generally speaking also two or three kinds, many of the hand-carved tools. Carved and hand-repairing machine, how to distinguish? This problem is very simple, ninety percent of the master will not do, except if the work costs more attractive under the circumstances, because the computer is usually relief carving machine, relatively shallow relief, do not speak too much trouble repairing that relates to labor charges, usually down the overall repair work costs are very high, so better to buy a piece of a good brand, be pure hand carved, so do not make more sense and value! Contact: Yujing Li Tel: 4006156603 Website: http: //www.yucunyuye.com Address: Nanyang City Tianguan Li River Logistics Park Avenue in the middle