Shaangxi World Iron & SteelShaangxi World Iron & Steel Co. is a steel and iron production company that offers round steel, pipes and casing tubes.
Sino Drills Co. is an international specialized in manufacturing, supplying and services of rock drilling tools such as bits and drilling hammers.
Tecop Sa is the manufactures of drill rigs and tools for civil engineering, geothechnic and water welling.
STA Co. provides special hydraulic equipment for the construction industry such as grouting, jet grouting and vibro-floating for more than thirty years.