Discover our heavy-duty, high-corrosion resistant custom components optimized for modern luxury architectural applications.
Ningbo Huazhu Precision Machinery Co., Ltd. (formerly known as Tiezhu Hardware Factory) was established in 2007 and rebranded in 2015. Over the years, we have emerged as a premier manufacturer and exporter specializing in custom metal electroplating services, bathroom hardware, high-end shower accessories, and structural door/window fittings.
Our factory integrates the entire production line under one roof: from structural tooling design and die casting to precision CNC machining, high-mirror polishing, advanced chemical electroplating, vacuum-deposition PVD, and automated inspection. This vertical chain ensures optimal metal adhesion, flawless finishing, and complete quality traceability. We continually serve global market leaders, acting as a certified OEM partner for world-class sanitary hardware and designer architecture brands.
Ensuring metallurgical integrity and superior aesthetics through a systematic chemical and physical finishing flow.
We control surface properties directly from the die casting phase. By minimizing surface porosity in zinc alloys (Zamak 3, 5) and using precision CNC tolerances up to 0.02mm, we prevent sub-surface micro-cracks where plating solutions might fail to bond.
We deposit sequential layers of Acid Copper (for surface leveling), Semi-Bright Nickel (for corrosion barrier/ductility), Bright Nickel (for brilliant luster), and Micro-porous Chrome (for superior surface hardness, mechanical durability, and chemical protection).
For high-end finishes (brushed gold, matte black, gunmetal), we employ Physical Vapor Deposition (PVD) under high vacuum. We apply ceramic nano-coatings to ensure that fingerprint resistance and scratch resilience meet international architectural standards.
In traditional manufacturing, products are cast by one company, machined by another, and shipped to a third facility for surface electroplating. This fragmented logistics chain creates significant overhead, transport hazards, handling abrasions, and a lack of quality accountability.
Ningbo Huazhu operates a completely unified manufacturing footprint. Everything from custom structural tooling to the final shipment is processed inside our 20,000 square meter ISO 9001 facility. We design and build mold tools within 28 to 35 days, cast, machine, manually or automatically polish, electroplate, inspect, and package under a single quality control system. Located in Ningbo, Zhejiang, our factory benefits from the world's most dense and mature industrial metal hardware cluster, providing high supply chain agility and direct access to major global shipping lanes via the Port of Ningbo.
This complete operational integration enables us to customize technical products to extreme salt-spray standards, control metal microstructures, and guarantee rapid delivery cycles that fragmented suppliers cannot replicate.
State-of-the-art manufacturing equipment executing ultra-precise machining and surface finishes.
Our facility operates hot and cold chamber die-casting systems alongside multi-axis CNC machines, reaching spatial manufacturing tolerances within 0.02mm for uniform, dense castings.
We run automated polishing lines combined with manual buffing sections. This ensures complex geometries have standard average roughness (Ra) values ready for uniform metal deposition.
Automated rack plating systems monitor plating temperatures, current densities, and chemical parameters, delivering uniform coating layers and zero pinholes.
Adapting metal chemistry and thickness to meet local environmental, regulatory, and market demands.
High salinity in coastal zones accelerates corrosion in zinc and brass fittings. We offer custom multilayer electroplating services designed to pass up to 480 hours in Neutral Salt Spray (NSS) testing, exceeding ASTM B117 standards.
Architectural sanitary hardware (e.g., shower hinges, luxury knobs) requires precise colors and strict environmental compliance. We supply high-end PVD finishes, ensuring total REACH and RoHS compliance.
High humidity and high-frequency use in commercial developments demand robust structural wear protection. We utilize micro-porous chrome coatings that distribute localized stresses to prevent micro-cracks.
ISO 9001 and IATF 16949 certified quality management system ensuring consistent chemical execution.
Our mold workshop designs and manufactures advanced casting tools within 28-35 days, accelerating your time-to-market.
We run all operations—mold making, casting, polishing, electroplating, coating, PVD, and assembly—at one single factory location.
We serve leading global luxury hardware brands including Dornbracht, TOTO, INDA, and ROCA.
Every production batch undergoes strict testing, achieving from 240H up to 480H in neutral salt spray tests.
Partnering with the world's most demanding bathroom and architectural hardware brands.
The demand for surface finishing is evolving beyond simple corrosion protection. Modern industrial design requires smart coatings with self-cleaning, antimicrobial, and ultra-wear-resistant properties.
At Ningbo Huazhu, our R&D team is developing next-generation surface treatments. By combining advanced high-vacuum PVD technology with electroplated metallic layers, we are creating hybrid thin-films that offer superior hardness and dynamic colors.
Additionally, we are investing in advanced environmental controls. Our state-of-the-art waste-treatment recycling systems minimize water consumption and treat chemical byproducts, ensuring that our manufacturing operations comply with strict global ecological and sustainability standards.
Ningbo Huazhu follows strict quality standards for premium products. Standard zinc alloy components require an underplated copper strike of at least 8–10 microns to prevent zinc diffusion into the nickel layer. This underplating is followed by a ductile nickel layer (10–12 microns) and a final chromium layer (0.25–0.5 microns). This structured sequence prevents surface micro-cracking and maintains finish stability even under constant humidity.
Technical answers resolving material selection, corrosion testing, tooling, and surface treatment requirements.
Submit your technical specifications, 2D/3D drawings, or substrate alloy requirements. Our engineering team will provide a detailed quote and analysis within 24 hours.
Explore our technical catalog of high-durability kitchen, bathroom, and structural OEM hardware.
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