Engineered in the Pearl River Delta. Built in Southwest China. Delivered worldwide.
Full-series customized building windows and doors for the global market — designed in-house, manufactured in our own plant.
6063 multi-chamber profile, PA66-GF25 thermal break, Xinyi glass 5+15A+5 — great looks, excellent ventilation, hot-selling.
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Load-bearing 400 kg+ sliding doors with German hardware and smooth multi-panel operation.
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Slim sightlines with big performance — fully custom to your drawings.
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Maximize openings between indoor and outdoor spaces with precision-engineered folding systems.
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Modular, DIY-assemblable sunrooms, gazebos and carports delivered worldwide in flat-pack kits.
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Send CAD / PDF / sketches — our engineers deliver detailed drawings, node design and BOM within 48 hours.
View Details →Targeted window and door solutions for different scenarios — from single homes to landmark projects.
In-house R&D · Own Factory · Own Quality Control — not a trading company, not outsourced.
BRONK = in-house R&D + own factory + own quality control. Every container leaving our plant carries a 27-step quality promise — from aluminum ingot inspection to finished goods.
Our Southwest China 4.0 smart manufacturing base covers 40,000+ m² with fully digitalized production lines and a three-level QC laboratory. Export products are produced on the same lines, to the same standard, as our domestic retail brand — no "export downgrade" versions, ever.
Deliver safe, comfortable and energy-efficient living space for global users.
Precision manufacturing, strict inspection, sincere service. We don't chase trends — we set standards.
Become a world-class trusted window & door supplier.
One-stop OEM/ODM, logistics, installation and after-sales service — from quotation to your site.
Real projects from our domestic retail brand and export lines — same line, same standard.
Thermal-break windows for warm-climate winter comfort.
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Full window and door replacement for a residential project.
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Window and door industry knowledge, market trends and buyer guides.
Compare operation, ventilation, security and cost to pick the right system for your project.
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What each term covers, who pays what, and how to choose for your market.
Read More →Flat-pack modular or fully custom? Cost, lead time and installation differences explained.
Read More →Why we use PA66 GF25 thermal breaks, and how to verify what your supplier really uses.
Read More →Panel stacks, thresholds, drainage and hardware — everything to specify before you order.
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The exact questions to send to any supplier before you place your first order.
Read More →Fill out the form below — we will reply to you within 24 hours.