Based in Shenzhen, we bridge the gap between overseas buyers and China's premium building material suppliers in the Foshan industrial cluster.
Shenzhen Koca Trading Co., Ltd. is a specialized trading company focused on building materials sourcing. We are not a factory — we are your strategic sourcing partner with deep roots in the Foshan Door & Window Industrial Cluster, China's largest hub for aluminum windows, doors, and related building products.
Since our establishment, we have built direct partnerships with carefully vetted manufacturers, quality control specialists, and logistics providers. This network allows us to offer competitive wholesale pricing while maintaining the reliability and accountability that overseas buyers expect from a trading company.
Our team speaks English, Chinese, and Spanish, ensuring smooth communication throughout your sourcing journey — from initial inquiry to final delivery.
We personally visit and audit every partner facility. Our screening covers production capacity, quality management systems, export experience, and financial stability. Only manufacturers meeting our strict criteria enter our supplier network.
Our dedicated QC team conducts pre-shipment inspections including dimensional checks, surface finish verification, hardware functionality tests, and packaging integrity assessments. We provide detailed inspection reports with photos.
We manage the entire logistics chain — from factory pickup and consolidation to port handling, customs documentation, and freight booking. We coordinate sea, air, and rail options to optimize cost and delivery time for your needs.
Our commitment doesn't end at shipment. We provide installation guidance, spare parts coordination, and warranty claim support. Our team remains available for any post-delivery issues or reorders.
On-site facility inspection and capability assessment
Prototype review and client confirmation
Mid-production inspection and correction
Final inspection with photo documentation
Real-time shipment monitoring until arrival
Whether you're a distributor, contractor, or developer, we're ready to be your reliable sourcing partner in China.
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