PVC/UPVC Windows
Your Professional PVC/UPVC Windows Supplier
We are committed to creating better living and commercial spaces through innovative aluminum window and door systems.
With over 19 years of experience, SGL integrates R&D, design, manufacturing, and installation, providing high-end, customized solutions to partners worldwide.
Why choose us
Quality Assurance
Our production process incorporates rigorous quality control. From raw material inspection to in-process testing and finished product inspection, all products undergo three stages—initial inspection, sampling inspection, and final inspection—to ensure the highest quality.
Markets
Our products have gained international recognition and are exported to major global markets, including the United States, Canada, Germany, Russia, Saudi Arabia, Singapore, and Vietnam, fully complying with local standards.
Customization Solutions
As a direct manufacturer, we offer highly competitive prices and flexible customization options to meet diverse project needs.
product Parameter (specification)
|
Brand Name |
SGL |
Material |
Upvc double glass windows |
|
Features |
Double glazed, water proof, noise proof |
Place of Origin |
Shaanxi, China |
|
OEM and ODM |
Yes |
Warranty |
10 years |
|
After-Sales Service |
Onsite Inspection, Online technical |
Advantage |
Manufacturer with decades |
Benefits Of uPVC Windows
Energy efficiency: UPVC windows are energy efficient, meaning that the material the frame is made of won’t transfer heat and cold. Heat loss is reduced during winter and heat gain is reduced in Summer, so less energy is used to heat and cool a home.
Low maintenance: UPVC windows are extremely low maintenance because they do not need painting, sealing or varnishing and are easy to clean.
Durable: Choosing uPVC windows means you have a more durable window material,resistant to corrosion, warping, fading and rotting. Unlike traditional materials like timber, uPVC is not affected by extreme weather conditions. Good quality uPVC windows have a lifespan of about 20 years.
Eco friendly and sustainable: UPVC windows are both eco friendly and sustainable. The material is recyclable, and energy efficient. The production of uPVC windows requires less energy to make than other materials like timber or aluminium so the overall energy consumption is less. uPVC can be recycled and repurposed into new windows with different designs. Most of the current uPVC windows are made up of 40% recycled uPVC materials.
Cost effective: UPVC is one of the most cost effective window materials, particularly in comparison to timber frames. It costs less to produce and so is more affordable for window specialists to purchase. The energy efficiency properties also help save money on energy bills.
Noise reduction: UPVC is an excellent material for noise reduction. It reduces outside noise by up to 40dB. This occurs because the unplasticised polyvinyl chloride material is con-conductive which causes a reduction in noise transmission.
Weather resistance: UPVC is resistant to UV, heat and water which means it will not fade, rust, crack if subjected to weather extremes.
Design variety: UPVC windows come in many different styles, from fixed, sliding, tilt and turn, to bay window, casement and awning. There are uPVC windows to suit every style and taste, colour, shape and size.
|
Feature |
UPVC |
PVC |
|
Composition |
Does not contain plasticisers. |
Contains plasticisers. |
|
Application |
Used in products requiring rigidity like windows and door frames. |
Used in flexible products like wire insulation and clothing. |
|
Cost |
Initially costly. |
Initially affordable. |
|
Durability |
Lasts longer (up to 35 years). |
Less durable and can break easily. |
|
Temperature Tolerance |
Up to 60°C. |
Up to 60°C. |
|
Maintenance |
Less maintenance required. |
More maintenance than uPVC. |

1.Insulation performance: Level 6, 2.5≤K<3.0W(m2*K)
2.Wind pressure performance: Level 4, 2500≤P<3000Pa
3.Watertight performance: Level 5, 500Pa≤AP<700Pa
4.Airtight performance: Level 8, q1≤0.5m*(m*h)q2 ≤ 1.5m'(m*h)
5.Sound insulation: Level 2, 25dB ≤Rm+Ctr<30dB
Type:Tempered,Insulated,Laminated,Low-e,Float,Reflective,Bullet-proof,etc.
Layer:Single / Double / Triplex Glasses for reducing summer heat load and winter heat loss.
Color:Clear(Transparent),Frosted,Grey,Blown,Green,Blue,etc.
Thickness:4mm,5mm,6mm,8mm,10mm,12mm,15mm,19mm.
Insulated Glass Spacer:6A,9A,12A,15A,16A.
Standard Insulated Glass:5mm+9A/12A+5mm,6mm+9A/12A+6mm with argon gas filled inside.
Standard Laminated Glass:5mm+0.38PVB+5mm,5mm+0.76PVB+5mm.
Quality Standard:European standard CE,Australian standard AS2208,Chinese standard CCC.

Quality Assurance
Products have multi-link testing and inspection reports to ensure product quality. Professional communication, design, customization, production, and professional matching customer solutions.
Free Design
With our own expertise, we provide cost-free design development and contract documents with CAD and BIM drawings including elevations, project details and installation assistance. Before production, we will provide accurate sample drawings, clearly showing the cross-sectional pattern, size, opening method and direction, warm partition pattern, and installation nodes. We will not go into production until you sign off to ensure that the final product you receive meets the exact requirements of your project.
Order Communication Process For Doors And Windows
Send Your Needs
You need to send your requirements (sizes, drawings, budget, style, ideas,etc) to the account manager.
Product Quotation
The KA Manager makes quotations, contracts andservice lists according to your needs.
Confirm Order
The KA Manager sends the contract and drawings to you forconfirmation, which must be signed and send back.
Order Production
Order with suitable plan and production, and update the key process to you accordingly.
Quality Inspection
The quality inspector sends out drawings, videos and quality inspection reports;
The quality inspector/company/representative you designate;
The agreed third party has international credibility quality inspection.
Packaging And Transportation
Installation method: Pre-installation, disassembly and assembly,transportation
Transportation: We arrange transportation, you specify the freight forwarder to arrange

Use air blow gun and thinner to clean products surface.
Use Air bubble film / PE film / EPE foam to wrap products against sea water corrosion.
Use craft paper / corrugated paper to protect product four corners.
Load FCL Packing products into container directly.
(Note:Use container lashing belt to fasten FCL packing irregular goods.)
Load LCL Packing products into plywood cases / iron pallets with packing belt,then into container.(FCL:full container load;LCL:less than a container load)
Our Certificate



















