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Tumpal Hamonangan Simatupang has a vast experience in various roles within the steel industry, ranging from sales management to technical services. Currently serving as the Department Head of Plate Domestic Sales at PT Krakatau Posco, Tumpal has demonstrated proficiency in coordinating sales activities for various sectors in Indonesia. With a background in engineering, Tumpal's expertise also extends to production and process management, ensuring optimal production efficiency and quality. Graduating with a Bachelor's degree in Materials Engineering and a Master's in Business Administration from Institut Teknologi Bandung, Tumpal showcases a combination of technical knowledge and leadership skills.