MNSI Co., Ltd. is a company founded in 2011 by CEO Lee Gye-seung, located in Changwon, Gyeongnam, and specializes in manufacturing core equipment for ships and power plants.

MNSI Co., Ltd. is a company established in 2011 specializing in core equipment for ships and power plants. We develop and manufacture centrifugal separator modules for removing fuel oil impurities, oil-water separation and filtering systems, and high-efficiency plate-type electric heaters for fuel viscosity control. We have successfully localized key components previously dependent on imports and are securing technological competitiveness by introducing smart ship equipment that integrates eco-friendly solutions with IoT technology.

Business sectors

• Fuel Supply/Processing Systems for Ships and Power Generation: We provide core fuel supply and processing systems for the stable operation of diesel engines in ships and power plants. These systems include devices that remove impurities and moisture from low-grade fuel oil and filter fine particles from the fuel supply line.
• Manufacturing of auxiliary equipment for internal combustion power generation: We manufacture auxiliary equipment that assists in the efficient operation of internal combustion power generation systems. Our main business areas include auxiliary equipment for gas compressors and auxiliary equipment for marine engines.
• Water Treatment Systems: We are responding to environmental regulations through the development of water treatment system technologies and the manufacturing of equipment. This contributes to water quality management in ships and industrial sites.

Products

• Separator Module: A device that improves fuel quality by removing impurities and moisture contained in low-grade fuel oil (crude oil) using centrifugal separation technology. It contributes to extending engine life and improving combustion efficiency.
• Auto Filter: A product that automatically filters fine particles from the fuel supply line and maximizes maintenance convenience through a backwashing function.
• High-efficiency Plate Electric Heater: A device that helps maintain optimal engine performance by precisely controlling fuel viscosity. It contributes to increasing energy efficiency.

Special Features

• Localization of Core Components and Technological Competitiveness: We have successfully localized core components for ships and power plants that were previously dependent on imports. We are securing technological competitiveness by introducing smart ship equipment that integrates eco-friendly solutions and IoT technology.
• Continuous R&D and Patent Holding: Based on our proprietary core technological capabilities, we are expanding our technology portfolio through continuous investment in research and development. We are a venture company holding numerous patents.
• Selection as an Excellent Company and Stable Growth: We were selected as an excellent company for job creation in 2025 and are showing steady growth in financial indicators such as sales revenue, operating profit, and net profit.

Job Information

• Major Hiring Positions: We are recruiting for various roles including inventory management, sales support administrative staff, production staff, in-house IT specialists, and new solution PMs.
• Benefits: We provide the four major insurances, including National Pension, Health Insurance, Employment Insurance, and Industrial Accident Compensation Insurance. Other benefits include support for company housing/dormitories, congratulatory and condolence allowances, holiday gifts, and travel expenses for returning home.

💡 A word from Jobploy
MNSI Co., Ltd. is a technologically advanced small and medium-sized enterprise that manufactures machinery and equipment for ships and power plants. Positions primarily involve production, quality control, technology development, and sales support. For foreign workers, skills in precision machinery assembly and maintenance, adherence to safety regulations, and Korean language communication proficiency may be important. The company provides basic employee benefits, including the four major social insurances, and is a strong small enterprise pursuing technology-based growth.