Normally I'm a big fan of Chinese industrial components, since they are an affordable way for people like us to extend our collection of industrial Lego.
I'm not so keen on this push button station though. There are two things that cheapen it. The use of contact screws that if they had chosen a type with a smooth shaft above the thread would have got rid of the gritty-clicky feel, and the brass-like contact material with dimples as contacts that is unsuited to low voltage use due to scratchy surface resistance and also unsuitable for high current use due to potential pitting and arcing.
Other than that it could have been OK. And when you look at the amount of assembly and work involved in making and assembling the individual components it seems a bit odd.

The reference to the lift/elevator industry is especially interesting with old gear as there are often very simple interlock switches on the shaft doors, sometimes with exposed metalwork at full mains voltage.

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