Modular Buildings can be disassembled and reused for their portable features. It is easy to assemble due to its bolt-nut connection and light construction. These buildings can be installed very easily anywhere in the world. Advantages of use are reusability, easy assembly, design for all climatic and seismic conditions, bolt-nut connection, easy transportation, multi-purpose use. PST is a company that provides engineering, supply and construction services with high quality under the harshest climate conditions with its worldwide experience. PST has completed turnkey projects in the following areas, including: the petroleum, natural gas, energy, mining, refinery and construction sectors, government authorities (ministries, governorates, embassies, etc.), military, international organizations and non-profit organizations, etc. PST is organized rapidly in different countries at the same time under heavy conditions and stands out with its power to operate.