UJEN DEVELOPMENT CO., LTD.

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

Circular Design for Hardware Components Too

Circular Design

UJEN’s Sustainability Commitment

Circular Design is UJEN’s core practice for sustainability.
We believe sustainability should not be just a slogan, but something designed into products, materials, and user experiences.
This means that in every development process, we not only think about function and aesthetics, but also how resources can be regenerated, how products can last longer, and how information can remain transparent — ensuring that design truly aligns with environmental responsibility.


UJEN’s Three Principles of Circular Design:


  • Material Circulation: By introducing recycled content and waste-regeneration technology into production, we bring resources once destined for disposal back into the cycle of use — avoiding waste and reducing environmental burden. This is not only about reducing waste, but about giving materials a new life.
  • Design for Durability: We insist that products must be resilient and long-lasting, built to accompany people over time rather than be consumed in an instant. From structural design to material choices, and even modularity and repairability, durability remains at the core — ensuring the full value of resources is maximized.
  • Design Transparency: Every design element must have a clear purpose, making its function and intent easy to understand, and enabling the product to be easily recycled and reprocessed after use. We value transparency, because only then can design move beyond concepts and transform into action.

These three principles are aligned with international circular economy frameworks, echoing the Ellen MacArthur Foundation’s call to ā€œeliminate waste, keep materials in use, and regenerate nature.ā€ For UJEN, Circular Design is not a feature of a single product, but a systemic approach. We apply it across products, gifts, and packaging — from coasters to tape, from components to cushioning — with each detail carrying the same conviction.



Circular Design|Waste Reborn, Everyday Renewed.


This is UJEN’s commitment to the future, and the direction we aim to advance together with our global partners.

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Circular Design Coasters|Blooming and Turning Sustainability

Sustainability begins with the details on your table.Sustainability is not a slogan, nor something that exists only in reports. We believe it should...

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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.