Founded in 1983, the UK-based company Formula is a world-leading manufacturer of elevator light curtains and ACU systems. Headquartered in Oxford, UK, the company operates joint-venture manufacturing facilities in Dongtai and Yuyao, with additional R&D and service centers located in Guangzhou and the United States.
The product portfolio includes light curtains, leveling photoelectric sensors, through-beam sensors, reflective sensors, microwave radar sensors etc. These products are widely used not only in elevators and escalators, but also in various industries.
The light curtain series is comprehensive, ranging from standard 17-pair to 40-pair units available with either conventional or intelligent communications to 2 in 1 safety edges and 3D light curtains which is a safety solution combining 2D and 3D functions.
The company possesses an annual production capacity of 500,000 sets of light curtains, and 350,000 sets light curtains were sold to top brands worldwide in 2025.