Responsible for inquiry response, drawing and dimension organization, project pacing, and synchronization of quotation materials.
20
Years of Manufacturing Experience

About Us
Qinhan System Doors & Windows provides aluminum alloy doors and windows, metal door and window systems, sample prototyping, and OEM/ODM customization services for builders, contractors, distributors, and brand clients.
View FAQFactory Location
We organize production around aluminum alloy profiles, metal frames, thermal insulation strips, glass, hardware, surface treatments, and packaging methods, helping clients transform procurement needs into executable product configurations.
The factory can handle sample prototyping, small-batch trial orders, and large-scale engineering orders, suitable for door and window distributors, construction contractors, developers, and OEM/ODM brand clients.
Before formal communication, clients can first confirm product types, target markets, performance grades, packaging methods, and delivery schedules to reduce repeated modifications during drawing refinement and sampling stages.
20
Years of Manufacturing Experience
Team Showcase
Fixed service groups are set up around consultation, planning, production, and quality inspection & shipping. From drawing communication to factory delivery, clients can clearly see the responsible person and the next action.
Responsible for inquiry response, drawing and dimension organization, project pacing, and synchronization of quotation materials.
Coordinate with profiles, glass, hardware, colors, and performance conditions to complete scheme verification.
Follow up on sample confirmation, batch production scheduling, packaging methods, and shipment documentation preparation.
Conduct pre-delivery inspections focusing on dimensions, sealing, appearance, hardware, and packaging.
Team, sample showroom, and factory production line coordinate for demonstrations, enabling clients to quickly assess service capability and delivery credibility.
Factory Capabilities

12,000m²
Production Base
2,000m²
Sample Showroom
OEM
Custom Support
The production chain covers profile processing, corner assembly, glass configuration, finished product inspection, and export packaging, allowing clients to extend sample standards to batch orders.
The sample showroom is used to display profile cross-sections, colors, hardware, opening methods, and glass solutions, helping overseas clients remotely confirm product direction.
Material & Substrate Control
CNC Cutting & Machining
Final Product Assembly & Inspection
Project Prototyping & Shipping