Maurizio Butti, CEO of Songwon Industrial Group, died last week, according to the company. Butti joined the organization in 2006. Jongho Park will serve as interim CEO of the Ulsan, South Korea-based company, which makes antioxidants used in lubricants. Base oil refinerThai Oil Co. named Wirat Uanarumit CEO and president. Mumbai, India-based Savita Oil Technologies renewed an agreement with Swaraj Tractors to manufacture and supply genuine and company-branded motor oils for Swaraj’s range of tractors.