Under the agreement, South Korea received the technical data package (TDP) of the M48 Patton and its upgrade kits for 12 major enhancements. Korean engineers were sent to the United States Army Depot in Alabama for training, such as armor cast steel welding and production, precision manufacturing, assembling skills, quality inspection, and test evaluation. Around the same time, Park Chung-hee ordered the development of a domestic tank and personally summoned Chung Ju-yung, the founder of Hyundai Group, to recommend building a tank factory. Chung Ju-yung, thinking that the president asked for a train factory, promised to build one. The chairman was shocked after learning about his misunderstanding from the secretary as he was leaving the building.
