From design detailing to delivery—providing stable system window solutions for global contractors, distributors, and brand clients.
Factory Strength
20
Years of manufacturing experience
Featured System
Aluminum Series System Windows with Thermal Break Design
Ultimate sound insulation and thermal insulation, with a 45dB noise reduction effect suitable for projects in downtown areas and along airport routes.
2400Pa wind pressure resistance design, suitable for high-rise residential buildings, hotels, and commercial buildings.
IP68 waterproof sealing + EPDM weather-resistant rubber strips, fearless of extreme weather, with stable performance for 10 years.
2400Pa wind pressure resistance design, suitable for high-rise residential buildings, hotels, and commercial buildings.
IP68 waterproof sealing + EPDM weather-resistant rubber strips, fearless of extreme weather, with stable performance for 10 years.
Global Project Support
Fast Shipping to Ensure Project Timelines
Supports design detailing and OEM/ODM customization services.
From sample confirmation to bulk delivery, we help make engineering procurement and installation more efficient.
FOB/CIF/DDP multiple delivery methods, covering major global ports.
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Thermal Break Insulation System
PA66 Thermal Break Strip
High Wind Pressure Resistance
45dB Sound Insulation
U-Value 1.1 W/m²K
OEM / ODM Customization
Global Delivery
Structural Engineering
Thermal Break Insulation System
PA66 Thermal Break Strip
High Wind Pressure Resistance
45dB Sound Insulation
U-Value 1.1 W/m²K
OEM / ODM Customization
Global Delivery
Structural Engineering
Aluminum Alloy Door & Window Product Line
All Products →
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.Series 55 Single-Opening Aluminum Alloy Window
What can we offer to different clients?
01 / Builder & Contractor
If you are:
If you are:
Builder or Contractor
Facing tight project schedules, frequent drawing changes, and high coordination difficulty—we understand.
We can get involved early in the project, working with you to complete window type configuration, profile structure confirmation, glass solution optimization, and node drawing detailing. First confirm samples, then arrange batch production, reducing rework and changes during the construction phase.
Suitable project types: Apartment buildings, hotels, villas, commercial complexesService content:
Suitable project types: Apartment buildings, hotels, villas, commercial complexesService content:
- Window Configuration & Node Drawing Detailing
- Performance data, sample confirmation, and batch delivery coordination
- Adapts to different wind pressure requirements for high-rise and low-rise buildings
Contact Us
View Products
02 / Distributor & Agent
If you are:
If you are:
Agent and Distributor
Dealers require us to provide stable supply, consistent quality, and controllable profit margins
We support OEM/ODM brand customization; colors, hardware, and packaging can all be produced according to your brand requirements. Quick confirmation of sample rooms, stable batch supply, helping you establish product differentiation in the local market.
We support OEM/ODM brand customization; colors, hardware, and packaging can all be produced according to your brand requirements. Quick confirmation of sample rooms, stable batch supply, helping you establish product differentiation in the local market.
- OEM/ODM Brand Customization (MOQ 10㎡)
- Customization services for colors, hardware, and packaging
- Synchronized export packaging and shipping documents
Contact Us
View Products
03 / Homeowner
If you are:
If you are:
Individual Homeowner
Measurement & Installation Guidance
Measurement & Installation GuidanceCompare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.Showroom with video viewing, on-site consultation, and scheme comparison.
One-on-one follow-up by our business team, providing full guidance from dimension measurement to scheme confirmation, so you can buy with clarity and install with peace of mind.
- Measurement & Installation Guidance
- Measurement & Installation Guidance
- Measurement & Installation Guidance
Contact Us
View Products
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Why choose us?
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
System R&D · Performance Compliance
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
Compare quotation differences for the 90 Series aluminum window, including hardware, glass, service scope, delivery, and installation support before procurement.
| Comparison Dimension | Regular Trading Supplier | Qinhan System Windows & Doors |
|---|---|---|
| Factory Capability | Tends towards order transfer and inquiries, with production details being uncontrollable. | Owns processing, manufacturing, and sample display, making product structure, craftsmanship, and delivery schedule more controllable. |
| Solution Confirmation | Only quotes based on model number, easily overlooking project conditions. | First, review drawings, dimensions, opening methods, performance targets, and application scenarios. |
| Configuration Support | Profiles, glass, hardware, colors, and packaging confirmed separately. | Profiles, glass, hardware, colors, packaging, and documentation confirmed simultaneously. |
| Delivery Follow-up | Issues are temporarily transferred, making information prone to gaps. | Business, technology, production, and quality control are divided and followed up, making the milestones clearer. |
| Export Support | Packaging, documentation, and after-sales coordination are unstable. | Supports export packaging, documentation synchronization, sample prototyping, and OEM/ODM customization. |
Detail Showcase
We will fully present our door and window factory's product types, profile structures, performance configurations, production processes, quality inspection milestones, and export coordination to help you determine if the product matches your project requirements before inquiry.
With over a decade of deep involvement in the building materials industry, we have our own production base, fully controlling the entire process from aluminum profile testing and surface treatment to complete window assembly. Every door and every window withstands scrutiny down to the finest details.
System R&D · Performance Compliance
We don't assemble parts; we build systems. We adopt an integrated structural design, with air tightness, water tightness, and wind pressure resistance all passing authoritative inspections, providing a truly systematic solution for buildings.
- 01 Applications, Dimensions & Opening Types
- 02 Profiles, Glass, Hardware & Surface Finishes
- 03 Sample Approval, Production Scheduling & Export Packaging
20Years
of door and window manufacturing experience
System Windows · Sliding Doors · Curtain Walls
12,000m²
production base
Integrated processing and manufacturing
2,000m²
sample showroom
System window and profile display
OEM/ODM
customization support
Color · Hardware · Packaging · Materials
About Us
We are not a trading company; we are a brand factory.
We are an aluminum alloy door and window factory with 20 years of manufacturing experience, located in Shaanxi Province, China. We do not subcontract orders. Every window is completed in our own workshop, from aluminum alloy profile testing, precision CNC cutting, whole window assembly, to finished product inspection.
Export quality complies with the EN 14351-1 standard, covering thermal break windows, heavy-duty sliding doors, curtain walls, and facade supporting products. We use project drawings, profile samples, glass configurations, hardware solutions, and packaging requirements as the basis for communication, helping clients clarify product direction, performance boundaries, and delivery conditions before inquiry.
From sample procurement, small-batch trial orders to project bulk supply—Qinhan provides stable OEM/ODM customization support for global engineering contractors, distribution channels, and door and window brands.
Learn More →
Performance Indicators
Confirm performance boundaries before project procurement.
1.1W/m²K
Heat Transfer Coefficient
Complies with EN 14351-1
45dB
Sound Insulation Rating
Rw + Ctr combined configuration
2400Pa
Wind Pressure Resistance
Suitable for high-rise and strong wind environments
93mm
Frame Depth
93 Series Thermal Break Structure
10Years
Seal Lifespan
EPDM Sealing System
50+
Projects Covered
Countries & Regions Served
Factory
Qualifications, production, assembly, packaging,all revolve around project delivery.
12,000m²
Production Base
2,000m²
System Showroom
20 Years
Design Team
The factory will clearly break down product configurations, performance requirements, packaging methods, and delivery timelines in advance.
Reduce time loss from repeated confirmations in overseas projects
Mass production after sample confirmation
Key milestones include profile processing, machining, corner assembly, glass configuration, finished product inspection, and export packaging.
01
TestingAluminum Profile Production & Selection02
ProcessingCNC Cutting & Machining03
AssemblyWindow Assembly & Quality Control04
CustomizationOEM / ODM Support05
DocumentationEngineering Files & Detail Drawings06
DeliveryFOB / CIF / DDP
Team Showcase
Core Members
Core Members
Covering inquiries, proposals, production, and delivery.
From initial drawing communication to final pre-shipment review, customers can find a dedicated point of contact for each step. Someone is following up at every stage, ensuring clearer information and more stable delivery.
ShowroomOverseas BusinessOverseas Business Consultant
We respond quickly to your inquiries, help you sort out project requirements, coordinate internal resources, and prepare quotation documents.
——Making project initiation smoother.
Mass production after sample confirmationTechnical SupportSystem Solution Engineer
We understand your project drawings, confirming the profile structure, glass configuration, hardware solutions, and performance parameters — reducing communication and rework.
Aluminum Profile Production & SelectionProduction TrackingProduction Tracking & Scheduling
We closely monitor the schedule and delivery dates, notifying you in advance at each key milestone — making batch production predictable.
04Quality Control & ShippingQuality Control & Shipping Review
Pre-shipment Door-by-Door Inspection:
(Airtightness, watertightness, appearance, dimensions),
Ensuring the goods you receive match the confirmed samples
Need a customized door and window solution for a construction project?
Send drawings, dimensions, or project requirements. Haipai Chuang can provide product selection, structural detailing, sample prototyping, and OEM/ODM customization support.