Manufacturer links:

Garbage bin: https://www.lab23.it/en/product/street-furniture-litter-bins-fluxus/# 
Display board https://www.lab23.it/en/product/street-furniture-display-board-fluxus-bacheca/ 
Large bench: https://www.lab23.it/en/product/street-furniture-benches-fluxus/# 
Small bench: https://www.lab23.it/en/product/street-furniture-chairs-fluxus/ 
Bench without back: https://www.lab23.it/en/product/street-furniture-benches-fluxus-seat/ 

Models are made under TurboSmooth

For Corona render, it is recommended to install version no lower than 1.5, since the glossiness of the materials is adjusted taking into account PBR