SHENZHEN KOCA., Ltd. – Your On-Site Partner in Door & Window Supply

Based in Foshan — China’s leading hub for door and window manufacturing — Shenzhen Koca Trading Co., Ltd. is a specialized supply chain partner for global buyers. We provide tailored import-export solutions in system doors & windows, sunrooms, entry doors, and smart windows.
Through our unique “Embedded On-Site Management” model, we bring you more than products — we deliver trust, transparency, and total control.

Why Koca Stands Out

We place dedicated teams inside our partner factories, serving as your extended eyes, ears, and hands throughout the manufacturing process. This close integration allows us to ensure quality, accuracy, and agility at every step.

· Zero-Error Execution
On-site specialists collaborate directly with factory technicians to precisely implement your specifications and quality standards.

· End-to-End Quality Control
We monitor the entire process — from raw materials to packaging — identifying and resolving issues in real time.

· Transparent Scheduling & On-Time Delivery
With live production updates, you gain full visibility and reliable timelines for better planning.

· Flexible & Responsive Support
From small batches and urgent inserts to custom ODM projects, we adapt quickly to your evolving needs.

Simplify Your Sourcing. Strengthen Your Supply Chain.

With Koca, you gain more than a supplier — you gain a strategic partner embedded at the source. We turn complex cross-border procurement into a seamless and secure experience.

Robust Supply Chain for Premium Doors & Windows

Advanced Manufacturing Base: A 60,000 sqm smart factory supports an annual production capacity of 300,000 sqm, ensuring scalable and reliable output.

End-to-End Vertical Integration: Full in-house control over the entire manufacturing process—from profile production, extrusion, and painting to glass processing—guarantees consistent quality from raw material to finished product.

Proven Technical Capability: Backed by 60+ patents and a mature product line spanning system doors/windows, sunrooms, entry doors, and smart windows.

Agile Production & Wide Portfolio: Over 30 bestselling product series can be manufactured at scale to flexibly meet diverse and fluctuating global demand.

Strategic Global Partnerships: Direct collaboration with leading international hardware suppliers including Roto, Hoppe, and Siegenia ensures access to premium components and continuous innovation.

Efficiency-Driven Value: Integrated supply chain management and proprietary control enable the delivery of high-performance, stable-quality products at highly competitive prices.