Non-excavation technique refers to a method that can lay, repair, and replace various underground pipes without excavating the surface based on geological engineering techniques. KARONODIG specializes in research and development, manufacturing, and sales of non-excavation machinery. Our products involve municipal water supply and drainage, communication, power, network transmission, pipe jacking, radio and television, gas, petroleum, chemicals, heat, agricultural irrigation, etc. They do not affect the traffic and do not damage the environment. Meanwhile, they can shorten construction periods, lower comprehensive costs, and have the advantages of significant social benefits.