About Us > About SGL

SGL is located in Hanzhong City, Shaanxi Province, China. Hanzhong is a city rich in history and culture, serving as one of the key birthplaces of Han culture. Leveraging China's mature manufacturing infrastructure and the door and window industry supply chain, SGL brings Chinese-made door and window products and project solutions to the global market.

Established in 2006: Dedicated to Door and Window Manufacturing and Project Services

From a modest initial workshop to our current facilities featuring multiple specialized production and processing workshops, SGL has been deeply committed to the door and window industry for nearly two decades. Years of production experience have not only provided us with extensive manufacturing expertise but also enabled us to establish a comprehensive service system covering design, material selection, production, quality control, packaging, and export logistics.

Currently, SGL operates three main processing workshops equipped with multiple specialized production lines, including:

• Two aluminum alloy window processing lines
• One aluminum alloy door processing line
• One PVC/uPVC door and window processing line
• One tempered glass processing line
• Supporting equipment for door and window production, glass processing, and final assembly

By continuously upgrading our production equipment and manufacturing processes, we can customize dimensions, structures, opening mechanisms, glass configurations, profile systems, hardware, colors, and surface finishes to meet the specific requirements of different countries, architectural environments, and projects.

As international market demands evolve, customer needs for architectural doors and windows are no longer limited to a single material or product type.

Therefore, while continuously strengthening our own manufacturing capabilities, SGL actively integrates resources from across China's door, window, and building material supply chains, establishing long-term, stable partnerships with numerous high-quality manufacturers.

We currently offer a wide range of products to our customers, including:

Aluminum alloy doors and windows, PVC/uPVC doors and windows, wooden doors and windows, steel doors, fire-rated doors, entrance doors, and other related architectural door and window products. 

This "in-house manufacturing + supply chain integration" model enables SGL to match clients with the most suitable product solutions-tailored to specific project budgets, designs, performance requirements, and local market standards-rather than being limited to a single product or production system.

SGL offers more than just product procurement; we focus on the actual performance and application of our products within the building.

Leveraging architectural drawings, window schedules, dimensions, reference images, and technical specifications provided by clients, our expert team assists with product selection and solution optimization. We recommend the ideal profiles, glass, hardware, opening mechanisms, and performance configurations based on the specific climate, building structure, and usage scenario of each project.

Our services cater to both private residential and commercial projects, including:

Villas, houses, apartments, hotels, resorts, hospitals, commercial buildings, and other construction projects.

Whether for small-scale custom residential windows and doors or large-scale commercial projects, SGL provides the appropriate products and project support to meet specific needs.

Since officially expanding into international markets in 2021, SGL has accumulated over five years of experience in international trade and export projects.

Our clients and projects span numerous countries and regions worldwide, including:

North America, Europe, Australia, Southeast Asia, Central Asia, the Middle East, and Africa.

Different countries entail varying building codes, climatic conditions, installation practices, and product requirements.

From thermal insulation needs in cold regions to a focus on heat rejection, sun protection, and weather resistance in hot climates; and from small-batch customization for private homes to bulk procurement for hotels, apartments, and commercial projects-we continuously build experience through real-world projects and adapt our product solutions to meet diverse market demands.

For SGL, the sale of a door or window is not the end of the transaction.

From initial product consultation, dimension verification, and design planning to manufacturing, quality inspection, packaging, international shipping, and ongoing project support, we strive to be a trusted, long-term supply chain partner for windows and doors in China. Leveraging approximately 20 years of industry expertise, robust manufacturing capabilities, access to high-quality Chinese supply chains, and growing international project experience, SGL is dedicated to providing stable, flexible, and competitive Chinese door and window products and solutions for residential and commercial projects worldwide.

From China to the World.
From Manufacturing to Complete Solutions.

This is SGL