Company

about company
45-year custom door knob expert

FUIN Design Hardware, located in Changhua County, Taiwan, is one of the best crystal knob manufacturers. In 1977, FU IN was established, and we have over 45 years of experience in making door hardware.

We offer custom door knobs and decorative hardware, including glass-crystal door knobs for interior and bathroom doors. We take pride in creating lead-free crystal knobs for doors, kitchen, and bathroom accessories. Our products have excellent clarity and durability; they not only enhance the space's charm but also stand the test of time.

crystal bathroom accessories
door accessories
01Diversified Choices

It is combined with a solid brass base and finished in your preferred color, polish, and lacquer.

02Cooperation Partners

FUIN Design Hardware will be the best partner for your door handles and knobs hardware design. We work with many partners worldwide, such as the USA, the UK, and JAPAN, as the best crystal knobs and crystal pulls supplier. 

door accessories
door accessories
03OEM / ODM Design

Our service is to provide general products to our clients and customized products, such as OEM and ODM items with unique styles, like glass vintage door knobs or bathroom faucets with crystal knobs. This way, our clients can have a comprehensive range of unique items. We can offer an all-in-one service, so you won't have to look up other workshops. This will increase your time efficiency and decrease unnecessary costs. Our design for customers combines crystal and brass, such as door accessories, crystal bathroom accessories, etc. 

04ISO 9001:2015 Quality Management System Certification

We hereby certify that our company has successfully obtained ISO 9001:2015 Quality Management System certification, accredited by TAF (Taiwan Accreditation Foundation).

The scope of certification covers the design and manufacturing of door and cabinet hardware handles, including but not limited to architectural door handles, cabinet handles, and related hardware components.

This certification demonstrates our commitment to maintaining a robust quality management system, ensuring consistent product quality, continuous improvement, and full compliance with international quality standards. It further reflects our dedication to meeting customer requirements, regulatory obligations, and industry best practices throughout all stages of design, production, and delivery.

By implementing ISO 9001 standards, our company continues to enhance operational efficiency, product reliability, and customer satisfaction, reinforcing our position as a trusted manufacturer in the global architectural and furniture hardware market.

ISO 9001 Certification
Let US Create Your Dreams

We aim to offer high-quality products and deliver them to anyone who loves decorating their dream house. FUIN Design Hardware brings your vision to life with a classical, elegant lifestyle. We offer a variety of styles and shapes for the crystal doorknob design. Each production from our factory is processed in accordance with SOPs and company regulations. Our product quality and service will meet your needs in these ways.