... Elevator Co., Ltd. was founded in 1995, located in Shanghai, China, specializing in elevator manufacture, installation, maintenance, etc. In the past years, Guotai has ... operation panel) after it started manufacturing those elevator parts in 2000.Every button made by us is meticulously designed and strictly tested ... MechanicalButton movement: 0.25~0.8mmMaximum button movement: ≤1.5mmReaction force: 3~6N ...