Direct industrial access to our certified hardware components engineered for frameless glass, modern bathrooms, and high-load architectural fixtures.
Architectural spaces are changing. The hardware that secures, connects, and enables access must evolve. Today, B2B procurement leaders demand high-performance coatings, structural safety compliance, and robust production capacity.
Global architectural standards require materials capable of surviving high-humidity coastal and industrial atmospheres. B2B buyers now mandate ASTM B117 salt spray tests ranging from 240 hours up to 480 hours. Zinc alloy (Zamak 3 and Zamak 5) and SUS304/SUS316 stainless steel are the primary standards used to prevent oxidation and finish degradation.
Modern commercial and residential interiors rely on clean, frameless glass assemblies. This puts high load stresses directly on glass clamps, corner connectors, and shower door hinges. Mechanical engineers must design for high weight limits while preserving thin profile aesthetics and tight fitment margins.
Transaction cycles are shrinking. Global buyers are moving away from fragmented sourcing models. They now prefer consolidated manufacturing partners that offer mold design, high-pressure die-casting, precision machining, finishing (including PVD and electroplating), and automated quality testing under one roof.
Established in 2007 in Ningbo, Zhejiang, China, Ningbo Huazhu Precision Machinery Co., Ltd. (formerly known as Tiezhu Hardware Factory) has grown into a leading, integrated hardware manufacturer. In 2015, we rebranded and structured our operations to better serve the changing demands of the global market.
Today, our modern factory covers over 20,000 square meters and employs over 200 skilled workers and engineering professionals. We control the complete manufacturing pipeline—from initial mold design and prototype validation to zinc/aluminum alloy die casting, multi-axis machining, robotic polishing, electroplating, decorative PVD coatings, and automated final assembly.
We are a certified supplier of high-end accessories for global brands, including Germany’s Dornbracht, Japan’s TOTO, Italy’s INDA, and Spain’s ROCA.
Our facility utilizes modern, integrated production methods to ensure consistent quality and scale for OEM projects.
We operate a dedicated mold workshop using modern CAD/CAM software. Our tooling design process takes between 28 to 35 days, accelerating the journey from concept to production.
Our casting floor features both hot and cold chamber die-casting machines. This equipment is calibrated for zinc and aluminum alloys, minimizing porosity and improving surface density.
We hold engineering tolerances as tight as 0.02 mm. Our machinery handles post-cast milling, tapping, and drilling to ensure exact alignment and clean assemblies.
We offer electroplating, powder coating, liquid painting, and physical vapor deposition (PVD) to provide durable, aesthetic, and corrosion-resistant finishes.
From our roots as Tiezhu Hardware Factory to a multi-technology modern plant, we continue to prioritize long-term growth, technology investments, and customer success.
Our operational approach is built on a simple foundation: "To create value for customers, achieve win-win partnerships, and empower employees to realize their potential." This core philosophy informs our investments in manufacturing equipment and training programs.
By controlling all manufacturing processes in-house, we eliminate external supplier delays and quality hand-off issues. Each production batch undergoes material testing and surface finish checks before packaging, ensuring reliable quality control for every project.
Our quality management systems are certified to ISO 9001:2015 and IATF 16949:2016, demonstrating our ability to meet the strict quality standards of both the architectural and automotive industries.
We perform rigorous verification checks at every stage of production: from metallurgical testing of incoming alloy ingots to dimensional analysis and corrosion resistance testing of finished components.
SGS Certified, CE-ready structural templates, RoHS lead-free materials, environmental green license.
Our engineering and manufacturing capabilities support the product lines of leading global hardware and sanitary brands.
Our ongoing R&D efforts focus on introducing smart features, improving automation, and reducing environmental impact in hardware manufacturing.
We are expanding the use of multi-axis robotic arms on our polishing lines. Automated polishing improves surface uniformity, minimizes manual finishing errors, and increases the speed of preparing castings for plating.
We are investing in cleaner electroplating alternatives and high-vacuum PVD systems. These technologies reduce wastewater generation and chemical use while providing durable finishes that meet environmental standards.
We are developing custom internal cavities within door handles and hinges to accommodate IoT components, power conduits, and sensor arrays for modern smart lock and security installations.
Find technical insights regarding custom tooling, material selection, plating quality, and global supply coordination.
We primarily utilize Zamak 3 (ZL0400) and Zamak 5 (ZL0410) premium-grade zinc alloys. Zamak 3 is selected for its excellent balance of castability, dimensional stability, and finishing ease, making it ideal for detailed door handle designs. Zamak 5 is selected when higher yield strength, hardness, and mechanical wear resistance are required, such as in high-traffic structural handles.
Achieving 480 hours of neutral salt spray (NSS) protection requires careful control of our casting and multi-layer plating processes. We ensure our cast surfaces are dense and free of microscopic porosity. We then apply an initial acid copper layer to seal the surface, followed by a semi-bright nickel layer, a bright nickel layer, and a final chrome coating. We also offer physical vapor deposition (PVD) to provide additional protection for harsh marine or commercial wet areas.
Our typical lead time for new tool design, construction, and sample casting is 28 to 35 days. After the tool is completed, we supply the customer with first-article inspection (FAI) reports, initial samples, and physical dimension checks. Once the customer signs off on the samples, mass production begins within 15 to 20 days, depending on batch volumes and order requirements.
Yes. As an OEM manufacturer, we offer several ways to integrate custom logos, including laser etching, cast-in-mold impressions, and pad printing. We also work with customers to develop custom B2B packaging, retail boxes, and barcode labels to ensure products arrive ready for inventory systems or retail display.
Our standard Minimum Order Quantity (MOQ) depends on the size of the part, the material, and the required surface treatment. Generally, our MOQ starts at 500 to 1,000 pieces per run for medium-sized die-cast handles or clamps. This helps us optimize casting machine setup and finishing line efficiency.
For inquiries about custom tooling, material performance, or technical specifications, please contact our team. We will respond within 24 hours.
Additional OEM components, die-cast handles, custom shower hinges, and cabinet accessories engineered in our Ningbo facility.
Huazhu
