petroleum industry chemicals, namely a synthetic liquid based drilling fluid for use in the oil and gas well drilling industry

Polycrystalline diamond cutters for drill bits for drilling machines

Integrated earth drilling equipment, namely, well drilling machines consisting of drill bits, drill pipe, sensors, pneumatic hammers, electronic circuity, electrical generator, refrigerator, and transmission lines, sold as a unit

Manufacture of subterranean tubulars, drill bits, bearings, data communication systems and other downhole tools to order/ or specification of others