Pido Limited Partnership was founded by the Chotimongkol family in 1977, starting from 5 experienced staffs to design, supply and install the Heat Ventilation and Air Conditioning System and Electrical System for all buildings included of factory and special purpose building also. From word of customers’ mouth, caused him to expanded rapidly covering all regions in country within a few years. This continuous expansion with development have made the vast changes from Pido Ltd., Part. evolved into PIDO INTERNATIONAL CO., LTD. with a registered capital of 100,000,000.- Baht Until present, he has provided services like Construction Management (CM) and Management Contractors (MC) for all utilities system ; Power Electrical and Communication System, Sanitary and Fire Protection System, Heat ventilation and Air Conditioning System, Waste Treatment System and Special System for use of High Rise Building, Factory Building, Industrial Plant, Residential Building, Aircraft Hangars, Research & Development Center, Hotel, Shopping Malls, Department Store, Hospitals, Control Rooms, Special Class Factory of CD, optical lens, etc.