The payload ransomware group listed Tang Seng Nitrogen & Pump Systems Pte. Ltd. on its data leak site on 2026-05-19. Country: SG Sector: Manufacturing Domains named: tangsengservices.com Claim as published on the leak site: Tang Seng Nitrogen & Pump Systems Pte. Ltd. is a Singapore-based engineering and manufacturing company established in 1990. It specializes in designing, fabricating, and servicing equipment for the marine, oil and gas, and offshore industries. Their product portfolio includes nitrogen pumping units, industrial pumps, fire-fighting systems, and oil spill response equipment.