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GMB door handle: Five Materials for Commercial Excellence

The GMB SINO product line leverages brass, stainless steel, zinc alloy, aluminum alloy, and nylon, engineered to meet every commercial requirement, from high-traffic durability to life-safety compliance.

Home HOT Door Handle

Product Center

Modern Simple Solid Zinc Alloy Split Door Lock Handle on Round Rosette(Z062401)
Lock Handle

Modern Simple Solid Zinc Alloy Split Door Lock Handle on Round Rosette(Z062401)

High Security Mortise Door Lock/Anti-Fire Nylon Handle/Lock Body (1919-2)
Lock Handle

High Security Mortise Door Lock/Anti-Fire Nylon Handle/Lock Body (1919-2)

High Security Mortise Door Lock/Anti-Fire Nylon Handle/Lock Body (1919-1)
Lock Handle

High Security Mortise Door Lock/Anti-Fire Nylon Handle/Lock Body (1919-1)

High Security Mortise Door Lock/Anti-Fire Nylon Handle/Lock Body (1919-square)
Lock Handle

High Security Mortise Door Lock/Anti-Fire Nylon Handle/Lock Body (1919-square)

High Security Mortise Door Lock/Anti-Fire Nylon Handle/Lock Body (1919-round)
Lock Handle

High Security Mortise Door Lock/Anti-Fire Nylon Handle/Lock Body (1919-round)

Modern Simple Solid Zinc Alloy Split Door Lock Handle on Square Rosette(Z072508)
Lock Handle

Modern Simple Solid Zinc Alloy Split Door Lock Handle on Square Rosette(Z072508)

Modern Simple Solid Zinc Alloy Split Door Lock Handle on Square Rosette(Z072507)
Lock Handle

Modern Simple Solid Zinc Alloy Split Door Lock Handle on Square Rosette(Z072507)

Modern Simple Solid Zinc Alloy Split Door Lock Handle on Square Rosette(Z072506)
Lock Handle

Modern Simple Solid Zinc Alloy Split Door Lock Handle on Square Rosette(Z072506)

Modern Simple Solid Zinc Alloy Split Door Lock Handle on Square Rosette(Z072505)
Lock Handle

Modern Simple Solid Zinc Alloy Split Door Lock Handle on Square Rosette(Z072505)

Modern Simple Solid Zinc Alloy Split Door Lock Handle on Square Rosette(Z072504)
Lock Handle

Modern Simple Solid Zinc Alloy Split Door Lock Handle on Square Rosette(Z072504)

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Door Handle Solutions: Materials That Master Every Environment

The procurement landscape demands not just a good door handle, but the right one for the job. Our multi-material capability is our core strength, covering five distinct alloys and polymers: Stainless Steel for ultimate durability, Brass for luxury and hygiene, Zinc Alloy for design versatility, Aluminum Alloy for lightweight resilience, and Nylon for mandated fire safety. GMB comprehensive offering ensures that whether your project is a coastal commercial tower or a top-tier medical facility, GMB SINO provides the optimal component for long-term TCO optimization and regulatory certainty.

Product Advantages

We deliver certified quality, not just promises.

Fire Safety & Compliance

Our specialized, fire-resistant Nylon door handle systems are explicitly certified to European EN12209 standards.

Corrosion Resistance & TCO

The Stainless Steel series is the durable cornerstone for high-traffic and harsh environments (e.g., coastal). Its superior resistance to rust and wear significantly lowers maintenance costs and optimizes the Total Cost of Ownership (TCO).

Luxury, Hygiene, and Longevity

Brass door handles offer timeless elegance and a lifespan of up to 100 years. Crucially, its natural antibacterial properties make it the ideal, sustainable choice for healthcare and aged care environments.

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Application: Where Our Door Handle Shines

GMB OEM Service

Consultation & Solution Design

We analyze your specific market needs and compliance requirements (EN, ANSI) to co-design a custom smart lock solution, from function to appearance.

Certified Manufacturing & Testing

Our ISO 9001/14001 facilities manufacture your product, verified by our internal GMB Testing Center and certified by third-party bodies like BSI.

Global Logistics & Support

We manage the entire supply chain, delivering your "de-risked," fully certified hardware globally, backed by our dedicated after-sales support team.​

About GMB (Why Choose Us)

With a strong background over 15 years in hardware locks industry, GMB has established long-term business relations with the relevant companies in many countries and regions, such as USA, Britain, Germany, France, Poland, Belgium, Spain, Mexico and Russia etc. We have constantly expanded business and volume has increased year by year.

Comprehensive OEM/ODM

Full customization, from design concept to mold development, integrating with global brands to meet unique project specifications.

Guaranteed Supply Chain Resilience

Multi-source strategy, supplier audits, and product traceability reduce procurement risks and ensure stable, continuous component supply.

TCO-Focused Quality Assurance

Certified products (EN, UL, ANSI) reduce failures, warranty claims, and legal risks, maximizing long-term customer value.

In-House EN/ANSI Testing Lab

We don't just claim quality; we prove it. Our BSI Kitemark certification (EN1303) guarantees high security, de-risking your purchase.

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FAQs

Q: How does GMB SINO ensure the quality of its plating/finish on a Zinc Alloy door handle for long-term use?
We implement rigorous, multi-stage electroplating and PVD (Physical Vapor Deposition) coating processes. These treatments compensate for the alloy's natural properties, creating an extremely hard, corrosion-resistant surface that passes international salt spray testing standards for color stability and durability.
Q: Why are brass door handles considered beneficial for sustainable building design?
Brass is a highly sustainable metal. It has extremely high recycling value and can be recycled an unlimited number of times without losing quality. This perfectly aligns with modern green building principles of low waste and circular design, helping projects obtain environmental certification.
Q: What lead time can we expect for a large-scale customized OEM project (e.g., a specific brass door handle)?
Complex OEM projects, particularly for brass or copper, involve die casting, grinding, polishing, and specialized plating. Our average processing cycle is typically $\mathbf{7\text{ weeks or longer}}$, demonstrating the meticulous, professional management required for high-quality, customized manufacturing.
Q: How does GMB SINO support version stability for components in long-term building projects?
We provide continuous supply chain and lifecycle management. We proactively notify customers when components approach End-of-Life (EoL), offering certified, compatible alternatives to ensure high version stability and prevent costly, disruptive replacements years down the line.
Q: How do we ensure a balance between design and strength during the mold development phase for complex, custom-designed zinc alloy door handles?
In the early stages of mold development, we use finite element analysis (FEA) to simulate stress conditions. This allows us to accurately assess the potential stress points and weak points of the zinc alloy under complex designs before actual production, and to optimize the structural thickness while maintaining aesthetic appeal, ensuring it meets the required strength standards.

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Get Touch With Us

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Contact Info

If you have any questions or requirements regarding solutions, please feel free to contact our customer service team.

86 51082717655

info@gmbsino.com

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