Good News | Lianhe Qiang has won the bid to supply the exclusive sealant strips for the windows, doors, and curtain walls of Chengdu’s tallest building, the China Overseas Tianfu Center, which stands at 489 meters.
Sep 12,2026
Chengdu China Overseas Tianfu Center, the tallest skyscraper in Southwest China and a key landmark project in Sichuan Province, stands proudly at the heart of the Tianfu Headquarters Business District! 489 The Mi Super‑Tall Tower redefines Chengdu’s urban skyline, seamlessly integrating high‑end corporate headquarters, a premier sky‑high hotel,云端观光 (cloud‑level sightseeing), and upscale retail. As a landmark super‑tall urban complex in the Chengdu–Chongqing Twin‑City Economic Circle, it embodies the era‑defining vision of upward‑driven urban development in western China.
This supertall tower faces extremely complex high‑altitude operating conditions, including strong wind pressures, extreme diurnal temperature swings, intense ultraviolet radiation at height, rainwater erosion, and structural displacements of the curtain wall. These challenges impose exceptionally stringent requirements on the air‑tightness, water‑tightness, aging resistance, and structural compatibility of door and window–curtain‑wall sealing systems. The sealing strips used in curtain walls and windows serve as an invisible yet critical safety barrier for ultra‑tall buildings.
Lianhe Qiang Technology R&D Laboratory
As a participating drafting unit in the national standard for architectural sealing strips and the lead drafting unit for the national standard on expansion joints, Lianheqiang—having devoted 37 years to the architectural sealing industry—has become the exclusive supplier of door, window, and curtain wall sealing strips for the China Overseas Tianfu Center in Chengdu, offering tailor-made products and end-to-end technical support services.
Since 1990 Since [Year], Lianheqiang has been dedicated to the R&D and lean manufacturing of elastomeric sealing materials for doors, windows, curtain walls, and expansion joint systems. With its own state-of-the-art intelligent manufacturing base, equipped with a complete suite of precision production equipment and standardized testing laboratories, the company implements end-to-end closed-loop quality control—covering everything from raw material selection and formulation optimization to extrusion molding and final product inspection—delivering high-performance sealing solutions for premier landmark projects.
In response to the ultra‑tall building conditions at China Overseas Tianfu Center and the region’s characteristics—high humidity, frequent rainfall, and significant temperature fluctuations—the project’s custom‑designed sealing strips have undergone specialized optimization.
Ultra‑weather‑resistant compatibility: Optimized polymer formulation delivers exceptional resistance to UV radiation, ozone, and aging. Even under prolonged exposure at high altitudes, it remains resistant to deformation, cracking, and fading, ensuring reliable performance in demanding outdoor conditions.
High‑performance structural sealing: Optimized multi-cavity structural design ensures flexible accommodation of thermal expansion and contraction as well as minute structural displacements in curtain walls, while effectively resisting high‑altitude wind pressure impacts. This robust approach reliably maintains the curtain wall’s air‑tightness and water‑tightness performance, mitigating the risk of water infiltration at its source.
Engineering-grade, high-standard quality: The product has undergone a series of rigorous tests in our in-house laboratory, including high‑ and low‑temperature cycling, compression set, material compatibility, and aging resistance. Its performance metrics fully meet the project’s high‑end construction specifications and comply with engineering standards across multiple countries.
End-to-end, one-stop engineering support services: The dedicated project team provides end-to-end support, covering preliminary solution selection, sample submission for testing, BIM End-to-end coordination, mass production, just-in-time delivery, on-site technical integration, and comprehensive project documentation ensure the efficient and high‑quality execution of the project.
A great urban landmark, it offers both a breathtaking, sweeping vista and the meticulous attention to detail that lies beneath. From material R&D to on‑site execution, Lianheqiang has painstakingly refined every sealant strip with rigorous craftsmanship. The successful completion of the China Overseas Tianfu Center project in Chengdu not only underscores the industry’s full recognition of Lianheqiang’s product excellence but also serves as further proof of the brand’s deep commitment to the high‑end, ultra‑tall‑building market.
Looking ahead, Lianheqiang will continue to invest deeply in the R&D and intelligent manufacturing of high-end architectural sealing systems, rooted in the Greater Bay Area and serving the world. With its stable, durable, and premium‑quality sealing products, it will keep empowering major super‑tall landmark projects across China, leveraging China’s cutting‑edge capabilities in rubber and plastic sealing to safeguard the soaring heights of cities worldwide.
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