BRONK = in-house R&D + own factory + own quality control. We don't chase trends — we set standards.
Too many brands chase trends, white-label and cut costs. We chose a slower, heavier path — investing in the parts you cannot see: profile wall thickness from 1.4 mm, PA66 GF25 thermal breaks instead of PVC, hardware that survives 480+ hours of salt spray, surface finishes to Qualicoat Seaside standard.
"Bronk" is a coined word from Bronze — respect for classic craftsmanship that stands the test of time — and Trunk — our own production capacity and quality control, never outsourced.
Guangdong Bronk Technology Co., Ltd. is a high-end energy-saving aluminum window & door manufacturer integrating R&D, production, sales and service — spanning aluminum sliding doors, thermal-break casement windows, sliding windows, hinged doors and sunrooms.
Export products are produced on the same lines, to the same standard, as our domestic retail brand — verified daily by thousands of home installations.
Same line, same standard, same quality — from aluminum ingot inspection to finished goods, every order passes 27 quality checkpoints.
Southwest China 4.0 smart manufacturing base — Guanghan, Sichuan.
From aluminum ingot inspection to finished goods — what actually happens at every stage.
Three-system international certification, continuously audited.
Quality management system — current, under continuous audit.
Environmental management system — current.
Occupational health & safety — current.
We publish what we use — ask us anything, we will answer.
| Component | Standard / options |
|---|---|
| Profile alloy | 6063-T5 / 6060-T66 |
| Hardware | HOPPE / ROTO / SIEGENIA / CMECH (optional) |
| Thermal break | TECHNOFORM or first-tier domestic PA66 GF25, PVC-free |
| Glass | Xinyi / CSG original, film series, air-gap width, gas type disclosed |
| Surface finish | Process and weathering class disclosed per project |