Because of virus, there have lots of escalator handrail sterilizers on the market.

1, Smart escalator handrail sterilizer, from korea
Merit: double sterilizer, UV-C and disinfectant
Defect: expensive, hard to install, and need to maintain every month
Photos:
More: https://www.escalatorparts.cn/product/JF/EscalatorParts/OtherEscalatorParts/TYESHR0002WC/

2, Hold-safe escalator handrail sterilizer, from korea
Merit: using UV-C sterilizer, very easy to install, and nice appearance, no need power suppy, no battery
Defect: patent problem.....
Photos:
More: https://www.escalatorparts.cn/product/JF/EscalatorParts/OtherEscalatorParts/TYESHR0002HP2/

3, inside escalator handrail sterilizer, from China
Merit: cheap, suitable escalator safe
Defect: install need by professional escalator person
Photos:
More: https://www.escalatorparts.cn/product/JF/EscalatorParts/OtherEscalatorParts/UV-C/

4, new inside escalator handrail sterilizer, from China
Merit: cheap, suitable escalator safe
Defect: install need by professional escalator person
Photos:
More: https://www.hold-safe.com/products/new-type-of-inside-uv-c-escalator-handrail-sterilizer