UJEN DEVELOPMENT CO., LTD. - UJEN is a manufacturer with 45 years of experience in producing hand screws, offering custom services and professional mold-making capabilities for knobs & handles.

UJEN Taiwan plastic injection molding expertises: hand screws, knob screws, plastic knobs, adjustable handles and indexing plungers manufacturer | UJEN DEVELOPMENT CO., LTD.

UJEN Development Co., Ltd., with over 45 years of expertise, specializes in plastic injection molding expertises and manufacturing precision hand screws, knob screws, plastic knobs, adjustable handles, and indexing plungers. As an ISO 9001:2015 certified company, we offer custom solutions and professional mold-making capabilities to enhance product functionality and brand value. Our commitment to quality and innovation ensures we meet the specific needs of our customers in various industries. UJEN is a leading manufacturer of high-quality hand screws in the screw parts industry. With over 40 years of expertise in plastic injection mold development, we have specialized in crafting precision rotary knobs and handles. We offer technical consulting services and customized design solutions to provide full-service from design to production.

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UJEN DEVELOPMENT CO., LTD.

High-quality manufacturer of hand screws, knob screws, and adjustable handles, focusing on customization and ISO 9001 certified quality.

UJEN – One-Stop Integrated Development & Manufacturing in Taiwan

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One-Stop Integrated Development & Manufacturing in Taiwan

With over 40 years of deep-rooted expertise in Taiwan’s precision manufacturing industry and ISO 9001 certification, UJEN offers comprehensive one-stop integrated development and manufacturing services. As your long-term technology partner, we specialize in transforming your innovative ideas into high-quality, market-ready products.

Our full-service solution covers the entire development chain—from early-stage concept discussions, mechanical design, and DFM (Design for Manufacturability) evaluation, to high-precision plastic injection or metal mold development, customized material selection, prototype sampling, and final large-scale mass production, including component assembly and global logistics. We seamlessly manage every step to ensure production efficiency and consistency.

By choosing UJEN, you benefit from a single point of contact that simplifies your supply chain management, reduces development risks, and significantly shortens time-to-market. Let us turn your design vision into world-class products ready for global reach.

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UJEN – One-Stop Integrated Manufacturing

n today’s fast-paced market where product development cycles are tightening and supply chains are becoming increasingly complex, reliable and efficient...

UJEN: Your Trusted International Partner for Precision Knob Fasteners and Mechanical Components

With over 40 years of precision manufacturing expertise, UJEN is based in Taiwan and delivers high-quality components on par with leading global brands...

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Secure Positioning with Robust Indexing Plungers for Accurate Component Placement

Based in Taiwan since 1994, UJEN DEVELOPMENT CO., LTD. expertise in manufacturing high-quality hand screws, knob screws, adjustable handles, grip knobs, and indexing plungers. Their commitment to customization and precision ensures each component, from hand screws to indexing plungers, meets rigorous standards. This dedication positions UJEN as a leader in supplying durable and reliable industrial components to global markets.

UJEN Development Co., Ltd. is a leading manufacturer of precision-engineered hand screws, knob screws, plastic knobs, adjustable handles, and indexing plungers for a variety of industrial needs. Our 45-year legacy, combined with ISO 9001:2015 certification, underscores our commitment to quality, innovation, and customer satisfaction. Specializing in custom solutions, we excel in professional moldmaking, enhancing equipment functionality across industries.

UJEN has been offering customers high-quality hand screws for industrial machinery since 1994, both with advanced technology and 47 years of experiences, UJEN ensures each customer's demands are met.