Lee Sung Tech Co., Ltd. is a specialized manufacturer of piping materials and metal forged products established in 1997. With its headquarters and production plant located in Jeongnam-myeon, Hwaseong-si, Gyeonggi-do, the company produces and supplies fittings for fluid control systems and instrumentation valves under its own brand, 'IY-LOK'. It has accumulated solid technical expertise by manufacturing high-quality fluid piping components required for semiconductors, displays, and plant facilities.

"Since our founding in 1993, Lee Sung Tech Co., Ltd. has played a pivotal role in the domestic and international Fluid & Control System industries under our proprietary brand, IY-LOK. Despite our relatively short history, we have moved forward step by step, valuing our promises to customers above all else, driven by relentless investment and passion for tube fittings and instrumentation valves."

Business Areas

• Manufacturing of fittings and valves for fluid control instrumentation: We specialize in producing high-precision instrumentation fittings and valves essential for semiconductor, display, and plant process facilities. Centered on our proprietary brand IY-LOK, we supply highly airtight materials optimized for overall fluid control systems.
• Precision machining of metal parts for piping: Based on CNC precision cutting and forging technology, we manufacture industrial piping parts that withstand high pressure and corrosion. We supply them to industrial sites after undergoing precision machining and finished product defect inspections.

Products

• Instrumentation Tube Fitting: These are precision fitting products used for connecting piping lines that require high-pressure and leak-free environments. They are widely applied to fluid lines in semiconductor and plant equipment due to their excellent durability and coupling strength.
• Instrumentation Valve: These are specialized valves, such as ball valves and needle valves, that precisely block or regulate the flow and pressure of fluids. They provide stable fluid control performance even under harsh industrial process conditions.

Special Notes

• Technical expertise based on the proprietary brand IY-LOK: Based on years of accumulated know-how in piping material development, we have established our own brand, IY-LOK, and have built recognition in the domestic and international Fluid & Control System industries.
• Precision CNC machining and quality management capabilities: We have established precision machining lines using CNC machine tools and systematic product testing facilities to reduce defect rates and produce high-quality products consistently.
• Responsiveness to advanced manufacturing processes: We possess the capability to supply components that meet the stringent standards of the semiconductor and display manufacturing equipment and process engineering markets, which require high levels of cleanliness and airtightness.

Recruitment Information

• Main Hiring Positions: CNC lathe/milling machining engineer, production and assembly worker, quality control
• Benefits: Rest area, uniform provided

💡 A Word from JOBPLOY
Lee Sung Tech Co., Ltd. is a manufacturing company that processes and assembles precision piping fittings and valves, with a focus on CNC machine tool operation, product assembly, and inspection processes. Due to the nature of the metal cutting site, compliance with machine safety rules and the wearing of personal protective equipment such as safety glasses and safety shoes is very important. Since we handle precision parts, a meticulous work attitude is required during the dimension measurement and assembly process, and having basic Korean communication skills to accurately understand safety instructions and work details is advantageous for adapting to the job.