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Q What product warranty period does D&D Hardware offer?
A We offer a 5-year mechanical warranty on most stainless steel hinges, door closers, door locks, and exit devices, excluding surface finishes and electronic components. We cover defects in materials and workmanship under normal use.
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Q What quality control measures does D&D Hardware follow, and does D&D Hardware accept third-party inspections?
A We implement 100% pre-packing inspection, in-process quality control, and final AQL random inspection. We have passed SGS and TUV factory audits, and we welcome buyers or third-party inspection agencies such as SGS or Intertek to inspect our factory.
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Q Is D&D Hardware a manufacturer or a trading company?
A We are an SGS-audited factory with over 18 years of experience manufacturing architectural hardware. We focus on professional door opening solutions for commercial, institutional, and project-based applications.
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Q How often does D&D Hardware update certification and compliance documents?
A We regularly update our certification and compliance documents to stay aligned with the latest international standards and regulatory requirements. We provide current information through our Resources page or through our sales team.
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Q Does D&D Hardware provide CoC, CoA, and third-party test reports?
A Yes, we provide Certificates of Conformity (CoC), Certificates of Analysis (CoA), and detailed third-party test reports for our products to verify compliance with relevant standards and specifications.
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Q Do D&D Hardware products comply with accessibility standards such as ADA or EN 1154 low opening force requirements?
A Yes, we design select D&D Hardware products to comply with accessibility requirements, including EN 1154 low opening force requirements, helping support safe and accessible use in public buildings.
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Q What CE certification and EN standard requirements apply to D&D Hardware commercial door hardware for the European market?
A We supply commercial door hardware for the European market in line with strict CE requirements and relevant EN standards, including EN 1935 for hinges and concealed hinges, EN 12209 for locks, EN 1154 for door closers, EN 1125 for panic exit devices, EN 1906 for door handles, and EN 1303 for cylinders. We ensure our products fully comply with these applicable standards.
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Q Where is the D&D Hardware factory located, and how can visitors arrange a factory visit?
A We are located in Jiangmen City, Guangdong Province, China, close to Guangzhou and Shenzhen. Our factory is about a two-hour drive from Guangzhou Airport, and we warmly welcome customers and partners to visit our facility.
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Q What is the difference between CE EN 1935 and ANSI/BHMA Grade 1 door hinge standards, and does D&D Hardware offer both?
A We define CE EN 1935 as a European standard focused on fire resistance, durability, and safety, while ANSI/BHMA Grade 1 is an American standard focused on strength, durability, and security. We offer door hinge products that comply with both standards to support different market and project requirements.
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Q Can a company become a D&D Hardware distributor in its local market?
A Yes, we welcome companies to become authorized distributors for D&D HARDWARE in their specific markets. We invite interested partners to contact us for more details about partnership opportunities.
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Q How can customers verify the validity and current status of D&D Hardware UL and CE certificates?
A We make certification details verifiable through the official websites of the relevant certification bodies by using the provided certificate numbers. We can also provide the latest certificate copies and verification instructions directly upon request.
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Q Does D&D Hardware provide traceability through batch numbers or serial numbers?
A Yes, we provide complete traceability from raw materials to finished products, including batch numbers and serial numbers, to support quality management and after-sales service.
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Q Which fire safety standards do D&D Hardware fire door hardware products meet?
A We provide fire-rated door hardware that complies with UL 10C and BS EN 1634 fire safety standards. We make these products suitable for commercial buildings, hotels, hospitals, government facilities, transportation hubs, high-rise developments, and other demanding projects.
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Q How does D&D Hardware handle quality disputes involving rust or surface finish issues on stainless steel door hardware?
A We maintain strict quality control and conduct salt spray testing to help ensure corrosion resistance. If rust or surface finish issues occur, we investigate the case according to our warranty policy and provide a suitable solution.
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Q What international certifications do D&D Hardware products hold?
A We manufacture and supply architectural door hardware tested to major international industry standards, including BS EN, CE, UL, ANSI, and BHMA. We provide relevant test reports and certificates upon request, and customers can also download available documents from our Resources page.
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Q What should customers do if they discover an issue after receiving D&D Hardware products?
A We ask customers to provide a defect description, supporting photos, and the affected quantity, then send the report to us. We review the issue, identify the appropriate solution, and take responsibility for product quality while providing the necessary support.
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Q Does D&D Hardware support OEM, ODM, and custom manufacturing?
A Yes, we support OEM, ODM, and custom manufacturing. We provide customization for hinge dimensions such as length, width, and thickness; special finishes such as satin, polish, PVD, and antique finishes; engraving, logo branding, and private labeling; and special materials such as SS316 stainless steel and solid brass.
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Q Does D&D Hardware provide samples, and what are the sample costs and lead times?
A Yes, we provide samples. For standard products, we usually offer 1-5 pieces per model, with sample fees and courier charges applicable and creditable against future bulk orders. For customized samples, we quote according to specific design requirements. Sample lead time is generally 3-15 business days, depending on the product and finish.
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Q What payment terms does D&D Hardware offer to buyers?
A We usually require 100% upfront T/T payment for samples or small orders under USD 5,000. For bulk orders, we require a 30% deposit and 70% balance before shipment or upon presentation of a copy of the Bill of Lading. For long-term partners, we can negotiate alternative terms such as L/C, D/P, and partial Cash on Delivery.
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Q What is D&D Hardware's production lead time?
A We usually need 25-35 days for stock or standard products, 35-45 days for custom finishes or materials such as SS316 and special colors, and 35-60 days for large-scale projects or complete door hardware sets. We provide weekly production updates and can expedite schedules for urgent projects when possible.
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