If you're a window fabricator, hardware distributor, or building materials importer, chances are you've already considered sourcing door and window hardware from China. The country produces over 60% of the world's architectural hardware, and factories in regions like Guangdong's Gaoyao Jinli Town have spent decades refining the craft.

But sourcing from China isn't without risks. Quality inconsistencies, communication gaps, and hidden middleman markups can turn what looks like a great deal into an expensive headache.

This guide walks you through the entire process — from identifying the right manufacturer to verifying quality, negotiating terms, and managing logistics. Whether you're a first-time buyer or looking to switch suppliers, you'll come away with a clear, actionable sourcing strategy.

Before you contact a single factory, get clear on the product categories you need. Door and window hardware is a broad term, and not every manufacturer specializes in the same products.

The main categories include:

• Window handles & espagnolettes — casement handles, tilt-turn handles, sliding handles, and multi-point locking systems
• Hinges & friction stays — butt hinges, concealed hinges, friction hinges, and window restrictors
• Sliding door & window rollers — heavy-duty pulleys, adjustable rollers, and track systems
• Locks & locking points — crescent locks, single-point locks, multi-point lock bodies, and anti-pry lock points
• Door control hardware — floor springs, door closers, door clamps, and pull handles
• Accessories — transmission rods, gear boxes, corner drives, and sealing strips

This is the single most important decision in your sourcing journey.

Trading companies act as middlemen. They don't manufacture anything — they buy from factories and resell to you with a markup (typically 15%–30%).

A true factory owns its production lines — die-casting machines, surface treatment lines, assembly workshops, and quality testing equipment.

• Ask for factory photos and videos of the production floor
• Request a video call to walk through the workshop
• Check if the company name includes "hardware" or "metal products" (trading companies often use "trading," "international," or "import-export")
• Verify their business license — manufacturers list "manufacturing" or "production" in their scope
• Ask which specific products they make in-house vs. source from others