FAQS

A1: GUANGZHOU LONGTERM INDUSTRIAL TECHNOLOGY CO., LTD. operates as a professional manufacturing facility and is a subsidiary of Guangdong Yunhui Industrial Limited Company (HYH Group). Headquartered in Guangdong, China, we specialize in producing premium-quality hardware products, including:

 Cabinet Handles & Knobs

 Door Handles & Locks

 Smart Door Locks

 Door Hardware

 Furniture Hardware

 As a factory-direct manufacturer, we ensure strict quality control and competitive pricing for global clients.

A2: Absolutely. With 17+ years of OEM/ODM expertise since 2007, we specialize in precision manufacturing tailored to your specifications. Our in-house R&D team and advanced production facilities ensure:

 Seamless adaptation of your designs (2D/3D files or physical samples)

 Material selection guidance and technical feasibility analysis

 Prototyping and full-scale production capabilities

 Process Overview:

 Share your design files (STEP, IGES, CAD) or physical samples

 Receive technical feedback within 48 hours

 Obtain competitive pricing with DFM (Design for Manufacturing) optimization

 We maintain ISO-certified quality standards throughout production to ensure design integrity and functional excellence.

A3: We stand by every product with a 12-month quality guarantee and streamlined resolution process:

 Defect Resolution Protocol:

 Documentation

 Submit clear photos/videos of concerns via email/portal within 7 days of discovery

 Rapid Analysis

 Receive technical evaluation report within 24 business hours

 Zero-Hassle Solution

  For verified quality issues:

• Full replacement shipped within 3 working days (freight prepaid by us)

• Optional refund or credit for future orders

 Extended Support:

√ Dedicated multilingual support team (EN/ES/FR/AR/RU)

√ Preventive packaging guidance for complex shipments

√ Access to installation videos and maintenance guides

 Our ISO 9001-certified system ensures:

• Traceable production batch records

• Reserved replacement inventory

• Quarterly quality audit reports available upon request

ct (customized products)