UJEN DEVELOPMENT CO., LTD.

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

UJEN Knobs, Handles & Spring Plungers: Premium Choices for Diverse Industries.

Case Study

Providing Businesses with Reliable and Innovative Choices in Precision Knob Screws and Spring-Pull Pins

UJEN specializes in the development and manufacturing of high-quality hardware components such as knob screws, tightening handle screws, and spring plungers, serving a multitude of cross-sector industries. Our products are widely applied in diverse markets including fitness equipment, medical devices, automotive components, and semiconductor peripheral equipment, demonstrating outstanding stability and durability, especially in structures requiring high precision and quick adjustment capabilities. Through CNC turn-mill complex machining and precision mold technology, combined with strict ISO9001 certified quality control processes, we ensure every product meets customer requirements and international standards.

For many years, UJEN has assisted numerous leading and emerging brands in enhancing their market competitiveness. For example, we have designed critical spring plunger assemblies for folding electric bicycles, created specialized porthole tightening knobs for the yacht industry, and provided antibacterial knob screws and eco-friendly material solutions to reduce plastic usage for medical instruments. We combine mass production capabilities with customization flexibility, offering rapid response throughout the entire process from design to delivery, earning deep trust from our clients. In the future, we will continue to leverage innovation and quality to be the preferred global partner for hardware component solutions.


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Indexing Plunger Design for Folding Electric BikesCustomized Spring Pull Pin Solution for a Leading Smart Mobility Brand

This case demonstrates how UJEN engineered a customized indexing plunger (spring pull pin) to solve a critical mechanical challenge for a top Taiwanese...

International Pet Stroller Brand Boosts User Convenience with UJEN Pull Pin Spring Knob Quick-Connection Module

This case describes how an internationally renowned pet stroller brand adopted UJEN pull pin spring knob technology to upgrade their carrier-to-stroller...

The Comeback of Engineering Plastics: How UJEN's High-Strength Handles Outperform Metal Gear Designs, Driving Cost Reduction and Efficiency for an Automation Equipment Leader

A global leader in automation equipment was long troubled by wear and tear on their custom-molded "plastic-clad metal gear" handles, with loosening and breakage...

Mold Re-Engineering & Custom Precision Knob Screws Empower a Leading Medical Tech Brand to Upgrade Its Smart Mobility Aids

A global Fortune-listed technology group’s medical-aid subsidiary turned to UJEN when facing a critical product-iteration challenge. Their initial spring-pull-pin...

Co-Creating Precision from 0 to 1: How UJEN’s Custom Knob Screws Helped a New Consumer Accessory Brand Lead the Outdoor Tech Mounting Market

This success story traces how UJEN partnered with a new consumer accessory brand spun off from a leading industrial clamp manufacturer. Starting from the brand’s...

From Versatile Options to Precision Customization: How UJEN Enabled a Taiwanese Tool Giant to Deliver Brand-Specific PANTONE Knob Screws for Global OEM Clients

This case highlights how UJEN helped a world-renowned Taiwanese fastening tool manufacturer meet an international OEM client’s request for custom PANTONE-colored...

Breaking the Cost–Durability Deadlock: How UJEN Zinc Alloy Industrial Handles Helped a Global Powder Processing Leader Achieve “Better Quality at Better Cost”

This case explains how UJEN helped a Taiwanese powder and bulk material processing specialist solve a long-standing trade-off between handle durability...

Cross-Border Precision Co-Creation: How UJEN Engineered a Unified-Look, Multi-Specification Custom Knob Screw System for a Global Weighing Technology Leader

A global weighing technology brand with a 30-year history needed a custom knob screw system that shared one unified external design while supporting multiple...

Heritage Craftsmanship Meets Precision Standards: How a 100-Year Japanese Tool Manufacturer Discovered UJEN’s “Standardized Chamfer” Knob Screws at the Taiwan Hardware Show

This success story chronicles how a century-old Japanese hand-tool manufacturer—born in Japan’s legendary “town of blacksmiths” and globally admired...

Precision Hardware as the Differentiation Engine: How UJEN Helped a Veteran Mobility Brand Achieve a New Competitive Peak

This story follows a 50-year Taiwanese mobility-aid manufacturer confronting a mature, highly competitive market. By integrating UJEN’s precision knobs,...

Designated by the Brand, Proven in PerformanceHow the UJEN K250 Knob Screw Became the Specified First Choice for a Global Fitness Equipment OEM Program

A top Taiwanese listed manufacturing group—one of the world's largest machine-tool builders and a trusted OEM supplier to international fitness brands—selected...

From Innovation to OEM Expansion: How UJEN’s Safety-Indicator Spring Pull Pin Helped a Global Fitness Giant Build a High-End SPINBIKE Benchmark

A world-leading fitness equipment manufacturer—renowned for 37 years of engineering excellence—developed a flagship high-end SPINBIKE under its own brand...

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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.