German WINKHAUS senior management visits Tiandong Doors & Windows, opening a new chapter for cooperation on high‑performance system doors and windows

On May 24th, an international exchange focusing on quality and technology took place at Tiandong Doors & Windows’ Suzhou Intelligent Manufacturing Base. Mr. Slabbekoorn Johannes, Global Product Director of the Aluminum Division at Germany‑based WINKHAUS, together with his China‑region team, paid a visit to Tiandong. The two sides conducted on‑site installation technical guidance and strategic cooperation discussions targeting high‑end broken‑bridge aluminum door‑and‑window hardware systems, injecting new momentum for deeper partnership and quality upgrading.

Founded in 1854, WINKHAUS boasts over 170 years of technical accumulation and is widely recognized across Europe as an expert in system door‑and‑window solutions. Renowned for its rigor, precision and safety, its products have been adopted by the German Federal Chancellery, representing the top‑tier standard of German‑style door‑and‑window hardware. In Europe, WINKHAUS has maintained deep‑seated cooperation with multiple leading system‑window manufacturers for more than 30 years, making it a true “hidden champion”.


Accompanied by Tiandong’s management team, Director Johannes and his entourage first toured the modern brand exhibition hall. Tiandong’s design capability and craftsmanship implementation in high‑performance system doors and windows, covering profile structures, thermal‑insulation designs and finished‑window performance, earned high praise from the German side.
Subsequently, both parties moved to Tiandong’s production workshop to focus on the sample windows of the jointly‑developed Pinshu Series. Director Johannes personally performed on‑site installation and full‑function demonstration of the hardware system for the sample windows, while Tiandong’s technical team observed and learned on‑site.



Developed and manufactured fully in accordance with German system‑window standards, these sample windows are fitted with German Semperit sealing strips and WINKHAUS high‑performance hardware systems. They will be shipped back to Germany for comprehensive testing by WINKHAUS headquarters under stringent German system‑window criteria, covering key indicators including air‑tightness, water‑tightness, wind‑resistance, and repeated‑opening‑closing durability.
This move demonstrates WINKHAUS’s meticulous pursuit of quality, and further confirms Tiandong’s commitment to “building Chinese doors and windows to German standards”.

At the subsequent forum, Tiandong’s management and the WINKHAUS delegation held in‑depth discussions on joint development, technology sharing and supply‑chain synergy for the high‑end door‑and‑window markets in China and globally, and reached multiple strategic cooperation intentions.

Tiandong Doors & Windows is committed to delivering premium system doors and windows that combine aesthetics, performance and safety for consumers. The in‑depth strategic cooperation with WINKHAUS on aluminum‑alloy hardware systems marks the addition of another “German‑style champion‑level” partner to Tiandong’s core supply‑chain portfolio. Both sides agree that only by achieving performance leaps in critical links such as hardware can real product generational gaps be created, guiding the industry into a new era of greater safety, durability and user experience.

This visit by WINKHAUS senior management is more than a technical and product exchange; it represents a profound hand‑shake of cross‑border manufacturing philosophies. Moving forward, Tiandong Doors & Windows will keep integrating high‑quality global resources, refining every door and window to higher standards, and deliver safe, comfortable and long‑lasting living experiences for families worldwide.
