Shanghai Liwa is a high-tech enterprise dedicated to the R&D, production, sales, and implementation of integrated vibration isolation and seismic protection solutions. Its core products cover a full range of vibration control solutions, including air-spring isolators, anti-vibration bases, shock absorbers, seismic devices, and vibration isolation platforms, meeting vibration and seismic protection needs across diverse scenarios such as precision instruments, industrial equipment, building HVAC, and structural engineering. The company boasts a professional R&D team, modern production facilities, and a comprehensive quality management system. With years of deep expertise in the vibration control field, Shanghai Liwa has accumulated substantial technical know-how and offers industry-leading product performance. Its products are widely applied in numerous sectors, including semiconductor precision manufacturing, aerospace, automotive electronics, building construction, and general industry. Backed by high-quality products and professional services, the company has earned strong recognition and trust from customers across various industries.
Overview of Operating Conditions
As the core equipment of building ventilation systems, rooftop ground-mounted fans generate continuous high- and low-frequency vibrations during long-term high-speed operation. These vibrations are transmitted as solid-borne noise through the rooftop slabs and walls, not only causing structural resonance and generating disturbing low-frequency noise, but also accelerating wear on fan bearings and fasteners, shortening equipment service life, and in severe cases, affecting the stable operation of precision equipment attached to the building. Conventional vibration isolation components generally have limitations such as a narrow isolation frequency range, poor air-tightness, and weak low-frequency isolation performance, making it difficult to completely resolve the vibration issues of rooftop ground-mounted fans.
The pneumatic isolators used in this project are high‑performance air isolation products developed by Shanghai Liva specifically for fans, chillers, and general industrial vibration equipment. Based on advanced air isolation principles and suitable for various high‑ and low‑frequency vibration equipment operating conditions, these isolators offer outstanding core technical advantages and are a perfect match for rooftop floor‑mounted fan applications.
Integrated molding process for ultimate air‑tightness and stability
Ultra‑low natural frequency for full‑spectrum vibration adaptation
High‑efficiency air isolation with excellent performance
Strong pressure resistance for safe and stable operation
The products strictly comply with the JISD‑4101 pneumatic pressure resistance standard, offering excellent load‑bearing capacity without deformation or failure during operation. They withstand impact from equipment start‑stop and load fluctuations, ensuring long‑term stable isolation performance.
For a long time, vibration and low‑frequency noise from rooftop floor‑mounted fans, air handling units, pumps, and other general building equipment have been common challenges in building operations and maintenance, as well as in commercial environment optimization. Relying on its core isolation technology, Shanghai Liva specifically addresses industry pain points such as low isolation efficiency, poor low‑frequency performance, and insufficient durability found in traditional isolation products. With highly adaptable, efficient, and stable vibration isolation products, the company provides one‑stop vibration and noise reduction solutions for various building vibration equipment. Looking ahead, the company will continue to optimize its pneumatic isolation technology, iterate product performance, and expand its presence in diverse scenarios including building HVAC, general precision manufacturing, and industrial equipment, consistently delivering high‑quality isolation products and customized solutions to support building environment improvement and long‑term stable operation of industrial equipment.
