Shin Jin Precision Co., Ltd. is a strong small and medium-sized enterprise established in 2002, specializing in hydraulic equipment and precision metal processing, headquartered in Siheung-si, Gyeonggi-do. Under CEO Kim Moon-ho, the company specializes in producing core valve devices for hydraulic breakers and precision cylindrical grinding parts, supplying high-quality components to the domestic heavy equipment market.

"Shin Jin Precision Co., Ltd. has continuously enhanced product reliability by combining skilled processing technology accumulated over more than 20 years with proprietary patents. Based on a select group of specialized personnel, we provide customized processing solutions that respond quickly and accurately to customer demands, and we lead the industry by commercializing the deformation compensation method in precision grinding technology."

Business Areas

• Manufacturing of Core Hydraulic Control Components: We specialize in designing, manufacturing, and supplying control valve devices that are essential for construction and industrial heavy equipment such as hydraulic breakers. By applying high-precision processing technology that can stably maintain equipment performance even in high-pressure operating environments, we increase the added value of our products.
• Polishing and Grinding of Construction Machinery Parts: We perform precision polishing and grinding (cylindrical grinding) for construction heavy equipment and machine parts. In particular, we have established specialized processes to prevent deformation of valve housings, securing a technological advantage in the market.

Products

• Deformation-Compensating Hydraulic Breaker Valve Device: This is a core product that physically compensates for the minute deformations of the housing that occur during the assembly and operation of hydraulic equipment, permanently ensuring the smooth reciprocating motion of the valve body. It dramatically reduces internal scratches and operational errors commonly found in high-pressure hydraulic systems, significantly cutting down equipment maintenance costs.

Special Notes

• Possession of skilled processing technology and patents: By combining skilled processing technology accumulated over more than 20 years with proprietary patents, we supply high-quality components to the domestic heavy equipment market. This forms the basis for continuously enhancing product reliability through technology-driven, substantive management.
• Leading in precision grinding technology: We are leading the industry by commercializing the deformation compensation method, the pinnacle of precision grinding technology. Its most significant feature is providing perfect airtightness and control performance.
• Customer-tailored processing solutions: We are renowned for providing customized processing solutions that respond quickly and accurately to customer demands, based on a select group of specialized personnel. With many years of know-how and technological expertise, we contribute to industrial development.

Recruitment Information

• Main Hiring Positions: We primarily recruit for polishing and grinding (cylindrical grinding) positions related to construction heavy equipment and machine parts, hiring both new and experienced employees.

💡 A Word from JobPloy
Shin Jin Precision is a company specializing in precision polishing and grinding of hydraulic breaker and construction machinery parts. This field requires high-level technical skills and experienced work, making it a good opportunity for foreign workers with relevant experience or skills. Precision machining requires meticulousness and persistence, and efforts to acquire new skills may be necessary.