What kind of product is a gas module boiler? What is the difference between it and a gas boiler?

My friend downstairs said it very well, but I didn’t expect anything to be added. Let me compare it with pictures for you.

Gas boiler

Large gas boiler

Modular gas boiler

Modular gas boiler

Large gas boiler Boilers are generally used in industrial production, producing large amounts of hot water or steam, and the furnace body is generally under pressure.

Modular gas boilers are commercial boilers and civilian normal pressure boilers. They are mainly used for heating in various office buildings, shopping malls, hotels, baths, communities, apartments, etc.