Reliable Factory Wholesale Solutions for US Window & Door Showroom Start-Up and Expansion

Industry Pain Points for U.S. Window Business Operators

Numerous U.S. builders, contractors, and window & door wholesale operators are confronted with core bottlenecks in business operation and expansion. Many emerging showroom stores and wholesale teams struggle to acquire market-competitive, code-compliant high-end window and door products. Conventional products suffer from single design, mediocre energy-saving performance, insufficient weather resistance, and lack of high-end customized models, making it difficult to attract mid-to-high-end project orders and form differentiated market advantages. Meanwhile, unstable product certification and inadequate factory support also restrict the long-term development and scale expansion of local window and door businesses.

Our Professional One-Stop Wholesale Solutions

As a professional U.S.-standard window and door manufacturer, KIMSUN provides exclusive customized wholesale support for U.S. local window store startups, showroom operations and business expansion. We aim to solve all operational pain points for our partners with standardized product systems, superior product performance and comprehensive factory services.

We launch two core star product series tailored for the North American market: the 88 high-performance system window series and the 105 aluminum-wood narrow sightline window series. Both products deliver excellent comprehensive performance, featuring premium airtightness, superior watertightness and outstanding thermal insulation capabilities. With certified low U-value and optimized SHGC parameters, our products achieve industry-leading energy-saving effects, fully meeting the high-standard energy consumption requirements of U.S. construction projects.

In terms of design, our products adopt a modern minimalist high-end aesthetic, with ultra-narrow frame vision and stunning decorative effects. We fully support customized ultra-tall sash solutions to meet the personalized design needs of high-end residential buildings and differentiated display needs of exhibition halls. For high-end luxury residential projects, our 180 aluminum-wood luxury lift and slide door series provides high-quality matching solutions, helping partners capture high-value market orders.

Authoritative Certification & Powerful Factory Support

All our products strictly comply with U.S. building code standards, with complete formal certifications, excellent durability and strong weather resistance, adapting to complex and diverse North American climatic environments, effectively reducing partners’ after-sales maintenance costs and operational risks.

To facilitate partners’ product inspection, selection and display matching, we have built a professional physical exhibition hall on the third floor of our factory, with complete sample displays covering all core hot-selling series. Supported by independent production workshops and mature production systems, we provide direct factory wholesale services, eliminating intermediate links and ensuring stable product quality and competitive pricing.

Committed to long-term win-win cooperation, KIMSUN serves as a reliable core supplier for U.S. local window and door showrooms, builders and wholesale partners, empowering the continuous growth and scale upgrading of your local business.

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Trusted Overseas Sourcing Partner for American Builders, Developers & ContractorsCore Challenges Faced by North American Construction Partners

Numerous US construction practitioners and real estate developers encounter persistent hurdles when importing windows and doors from overseas: incomplete industry certifications triggering customs detention, inferior structural resistance unable to withstand complex regional climates leading to frequent post-installation repairs, fragmented service procedures lacking unified project coordination, unstable production cycles causing delivery delays, and opaque cooperation terms with hidden extra costs that disrupt overall project budgets and schedules.

KIMSUN’s Integrated Sourcing Solutions

As a dedicated manufacturer specializing in custom windows and doors compliant with full North American standards, KIMSUN delivers systematic, risk-free supply solutions to resolve all your overseas procurement pain points.

1.Complete Standard Certifications for Unimpeded Customs Clearance All product lines pass full North American standard certification review with complete official documentation. Every shipment goes through streamlined customs clearance procedures to eliminate detention risks and additional administrative expenditures for your projects.

2.Robust All-Weather Products to Minimize Long-Term After-Sales Expense Our window and door systems feature solid structural construction, superior weather resistance and extended service life. Outstanding durability drastically cuts post-installation maintenance, replacement and repair costs for residential and commercial construction projects.

3.Full-Cycle Dedicated One-on-One Customized Support We assign exclusive specialists to each cooperative partner, providing end-to-end full-service coverage spanning personalized design drafting, precision production, strict quality inspection, container loading and door-to-door logistics delivery. Rigorous production scheduling guarantees on-time shipment for every order.

4.Stable Quality & Fully Transparent Cooperation Mechanism KIMSUN adheres to standardized quality control systems throughout manufacturing. All quotation terms, production processes and logistics fees are fully disclosed without hidden charges, building long-term stable and win-win cooperative relationships with global construction partners.

Whether you undertake residential renovation, commercial development or large-scale construction projects, KIMSUN stands as your most dependable overseas window and door supplier. Feel free to get in touch with our professional team to customize targeted solutions for your upcoming construction project.Website

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Backed by more than 27 years of professional manufacturing experience, Kimsun Windows & Doors has established solid industrial strength with a standardized production base of 40,000 square meters and an annual production capacity of 100,000 square meters. With mature manufacturing systems and stable output capacity, we are capable of delivering high-quality aluminum and wood window and door products to global markets steadily and efficiently.

Our professional wood processing workshop undertakes the core production of our classic product series, covering aluminum-wood windows, aluminum-wood doors, aluminum-wood folding doors, and solid wood windows. Every product is manufactured in-house with strict technical standards, ensuring consistent quality and customized flexibility for diverse architectural and project requirements.

To guarantee premium product performance and durability, we exclusively select high-quality timber imported from North America and Russia. All raw wood materials are FSC certified, featuring stable texture, environmental friendliness and excellent durability. Our senior woodworkers, with over 20 years of industry experience, devote themselves to exquisite craftsmanship, transforming premium timber into sophisticated architectural products that are robust, structurally stable, aesthetically elegant, and capable of standing the test of long-term use.

Our wood processing workshop is equipped with a full-automatic spraying production line and professional constant temperature and humidity control equipment. By precisely regulating the production environment, we effectively maintain the stability of wood materials and achieve a smooth, uniform, and high-grade paint finish. Supported by standardized production management and mature process flows, our factory is fully competent in undertaking large-volume orders while ensuring reliable quality and stable delivery schedules.

Quality control runs through every production procedure. All finished window and door products undergo rigorous professional inspection before delivery. Only qualified products enter the packaging process. We adopt refined protective measures, including anti-collision foam corner protection and full stretch film wrapping, to effectively avoid scratches, collisions and abrasion during transportation. Every product is well-protected to ensure intact delivery to customers worldwide.

Today, a complete batch of customized aluminum-wood window and door products has been fully produced, inspected and packaged, and is now ready for shipment to the United States. The entire process, from raw material selection, precision production, and strict quality testing to standardized packaging and container loading, is completed through our one-stop in-house service system.

Adhering to the pursuit of high-quality craftsmanship, Kimsun Windows & Doors continues to focus on the research, development and production of high-end aluminum-wood window and door products. Committed to building a long-term trusted global brand, we always deliver reliable products and professional services to clients around the world.

Recently, a batch of customized high-performance doors and windows of Kimsun Group has been successfully loaded and shipped, heading for USA. This batch of products is tailored for a local luxury private residence project, marking another successful overseas high-end cooperation case of the company, further expanding the brand’s influence in the American high-end door and window market.

This valuable cooperation was recommended by our long-term loyal client. In the early stage of the project, we maintained two months of detailed in-depth communication with the customer to fully align project design standards, product performance parameters and personalized customization needs. With rigorous industry insight, the customer specially flew to China to visit our production base, conduct on-site inspections of production workshops, production equipment and quality control systems, and negotiate all cooperation details face to face.

As a professional insider with rich experience in the door and window industry, the customer has extremely strict and professional requirements on product technology, structural stability and comprehensive performance. During the inspection, he carefully reviewed all our product test reports, deeply understood the structural advantages of our door and window profiles, and fully recognized the excellent performance of our high-energy-saving, wind-resistant and durable customized door and window products.

Relying on reliable product quality, mature customization technology and standardized production service system, Kimsun Group successfully won the customer’s full trust and established a long-term stable cooperative dealer relationship. The goods are expected to arrive in the United States in one month and be directly delivered to the project construction site, effectively simplifying the project construction process and ensuring efficient project progress.
We will continue to track the project construction progress and shoot exclusive finished effect videos for follow-up sharing. Kimsun Group always adheres to quality-oriented development, and welcomes global customers to consult and cooperate for high-end customized door and window solutions.

The 120 Series ultra-narrow frame windows redefine modern architectural aesthetics with a minimalist design philosophy. Breaking the bulky boundaries of traditional window systems, its sleek and slim frame blends seamlessly with a wide range of architectural styles, including modern, light luxury, and villa designs, perfectly integrating into diverse residential and commercial spaces.

Featuring an ultra-narrow visible profile, this series eliminates thick frame structures that disrupt visual continuity. It maximizes daylight penetration and broadens the viewing field, creating a borderless connection between indoor and outdoor scenery and delivering a brighter, more open living atmosphere. Beyond its minimalist appearance lies outstanding core performance. The optimized structural design provides excellent sound insulation and thermal insulation effects, effectively isolating outdoor noise and blocking external temperature transfer, maintaining a quiet and constant indoor comfort throughout the year.

Designed for practical living scenarios, the windows are equipped with openable insect screens, ensuring smooth indoor ventilation while effectively blocking mosquitoes and dust for all-round daily protection. Adopting a concealed side handle design, the overall window surface presents a clean, seamless and integrated aesthetic without redundant protrusions.

Built with high-strength aluminum alloy frames and professional thermal-break structures, the windows ensure outstanding structural stability and durability. The outward-opening configuration matched with a multi-point locking system greatly enhances anti-theft performance and overall sealing. Equipped with a built-in hidden limiter, the windows can precisely control the opening angle, preventing collision caused by strong winds and avoiding accidental clamping injuries. It effectively protects children and family safety, achieving the perfect combination of sophisticated aesthetics, comfortable performance and reliable security.

Kimsun folding doors are crafted with meticulous workmanship and human-oriented design concepts, perfectly balancing safety, practicality, stability and aesthetics, becoming an ideal door solution for residential houses, villas and commercial venues.

Safety performance stands out among its prominent strengths. The exclusive anti-finger pinching rubber seal design forms a protective barrier along the door gap, effectively preventing accidental hand clamping during opening and closing, and safeguarding the safety of elders and children at home. Besides, the professional misoperation prevention safety design avoids abnormal use damage, thoroughly eliminating potential usage hazards.

In terms of installation and daily maintenance, the product brings great convenience to users. It supports quick tolerance adjustment function, which can easily correct installation deviation on site. Matched with adjustable heavy-duty hinges, the door panel keeps flexible and smooth operation all the time, not prone to jamming or loosening issues after long-term use.

Structural stability also reaches outstanding standards. Top and bottom bolts are integrally embedded with door profiles, forming a solid overall structure. It boasts powerful wind pressure resistance, capable of coping with harsh outdoor weather and maintaining stable operation for years.

Equipped with roll-up insect screen, the screen enjoys high light transmittance, presenting broad and clear view. It features tiny displacement while using, not affecting daily ventilation and sight experience. With multiple superior designs combined, Kimsun folding doors create comfortable, safe and long-lasting using experience for every space.

Nestled in Chicago’s most coveted residential district, this bespoke home demands fenestration that matches its architectural prestige. Every detail is crafted for discerning homeowners who refuse compromise.

Kimsun Group was selected to deliver a full-house custom solution—backed by NFRC & American Standard certifications, precision engineering, and a design language that elevates luxury living for a global clientele.

KS88 Tilt & Turn Window: Dual-function ingenuity. Tilt for secure, quiet ventilation; turn inward for full access and effortless cleaning. Superior thermal performance, multi-point security—perfect for bedrooms & living areas.
KS88 Casement Door: Sleek narrow-frame design, exceptional sealing, and smooth operation. Blurs indoor-outdoor boundaries, ideal for patios & premium living spaces.
KS95 Folding Door: Grand panoramic design. Smooth folding action, maximum glass visibility—transforms spaces, creates seamless connection to exterior landscapes.
KS88 Fixed Window: Minimalist frames, maximum light & clarity. Architectural purity for feature walls & expansive city views.

Whole House Customization. One Style. One Standard. From living room to bedroom, terrace to study—Kimsun unifies design, performance, and quality across every opening. Flawless integration with Chicago’s modern architectural aesthetic.

Engineered for excellence. Supported by professional shop drawings, strict quality control, and full technical support—ensuring flawless execution from design to installation.

Kimsun Group — Custom Windows & Doors. Luxury Without Compromise. Trusted Worldwide.

Kimsun’s unwavering pursuit of quality and innovation is perfectly embodied in the KS105 series aluminum-wood windows. As a benchmark for quality in the aluminum-wood window industry, this series adheres to Kimsun’s stringent manufacturing standards, achieving authoritative NFRC (National Window and Door Rating Council) certification—an industry-recognized energy performance indicator—and fully complying with stringent US standards. This dual certification demonstrates its commitment to global quality standards and reflects our determination to exceed customer expectations, especially in the North American market.

In addition to its superior quality certifications, the KS105 series aluminum-wood windows also boast outstanding performance. With NFRC certification and US standards, it meets stringent energy performance requirements; its U-value, Solar Thermal Gain Coefficient (SHGC), and other indicators are verified, ensuring exceptional energy-saving performance. The KS105 series aluminum-wood windows combine the durability of premium aluminum with the warm texture of high-quality wood, offering superior thermal insulation to reduce energy consumption, excellent sound absorption for a quiet indoor environment, and enhanced structural durability to withstand harsh weather—all meeting U.S. long-term reliability standards.

The true uniqueness of the KS105 series lies in its perfect fusion of luxury, professional performance, and affordability. Kimsun combines high-grade aluminum profiles and premium wood with exquisite craftsmanship, giving this series a refined and natural aesthetic, while its performance fully meets U.S. standards and NFRC (National Energy Conservation Committee) scientifically verified energy ratings. More importantly, we offer these U.S.-standard, NFRC-certified aluminum-wood windows at reasonable prices, allowing more customers, including those in North America, to enjoy this superior solution.

For Kimsun, the KS105 series aluminum-wood windows are more than just a product; they represent our commitment to quality, performance, and value. Whether in residential or commercial spaces, this product line transforms the environment, bringing comfort, durability, and elegant natural charm to every space, further solidifying Kimsun’s position as a trusted leader in the global aluminum wood window industry.

At Kimsun, we have always adhered to the concept of integrating classic aesthetics with reliable quality, and the KS72 Series Classic Aluminum Window is the perfect interpretation of this commitment. As a core product of Kimsun, this series inherits the brand’s pursuit of excellence, combining timeless design with stable performance, and becomes a classic choice for both residential and commercial spaces with its magnificent appearance, enduring durability and timeless appeal.

The KS72 Series is meticulously crafted with premium aluminum profiles, which not only endow the window with excellent structural stability but also ensure long-term durability. The high-quality aluminum material effectively resists corrosion, deformation and harsh weather conditions, allowing the window to maintain its original appearance and performance even after years of use, truly achieving durability and timeless. Every detail of the profile is precision-processed, reflecting Kimsun’s rigorous attitude towards product quality.

In terms of design, the KS72 Series adheres to a classic and elegant style, with simple and smooth lines that complement various architectural styles. It perfectly blends aesthetic appeal with practical functionality, not only enhancing the overall texture of the building facade but also bringing a comfortable and elegant visual experience to the interior space. Whether it is a high-end residential community or a modern commercial building, the KS72 Series can seamlessly integrate and highlight the unique charm of the space.

Kimsun has always been committed to creating high-quality aluminum windows that stand the test of time. The KS72 Series Classic Aluminum Window, with its premium materials, exquisite craftsmanship, classic design and reliable performance, interprets Kimsun’s persistence in quality. It is not only a practical building component but also a carrier of taste and quality, bringing lasting value and comfort to users.

Kimsun upholds the spirit of craftsmanship embodied by master artisans who dedicated their lives to achieving excellence. For many years, our highly skilled craftsmen have consistently upheld a spirit of meticulous craftsmanship and an unwavering pursuit of detail. Day after day, they dedicate themselves to crafting the highest quality windows and doors, transforming superior wood into durable, elegant, and high-performance building products that stand the test of time.

Each piece of wood we select undergoes rigorous quality screening to ensure its exceptional grain, stability, and durability. Our experienced carpenters incorporate decades of practical experience and traditional techniques into every step of cutting, carving, assembly, and surface treatment. Through exquisite handcraftsmanship and modern precision machinery, we achieve a perfect balance between classic art and industrial efficiency. Every seam is meticulously sanded, every surface is meticulously finished, and every component undergoes rigorous assembly—truly embodying a spirit of meticulousness and wholehearted dedication.

We firmly believe that true quality lies in the details. From raw material processing to final inspection, every step strictly adheres to process standards and quality control procedures. We combine generations of traditional woodworking skills with advanced modern production equipment to ensure that every door and window possesses superior structural stability, excellent weather resistance, and lasting aesthetic appeal. This relentless pursuit of excellence ensures that our products not only meet functional requirements but also convey warmth, texture, and unique artistic value.

At Kimsun, exquisite craftsmanship is not merely a skill, but a commitment. We remain true to our original aspiration: to inherit the spirit of craftsmanship, to insist on creating top-tier doors and windows, and to provide customers with reliable, high-quality, beautiful, durable, and long-lasting products, ensuring peace of mind for generations to come.