In which year was the world's first gas-fired wall-hung boiler born?

Development of Weineng wall-hung boiler in Germany;

1874 John? Weineng set up a company in remscheid.

1894, gas water heater was invented and a new gas product market was established.

1924 invention of gas-fired heating boiler.

196 1 Weineng pioneered the wall-mounted gas heating boiler.

1967 Weineng pioneered the wall-mounted gas heating/hot water boiler, and the heating and hot water supply were provided by the same equipment.

In 2000, a new generation of "smile" arc panel design boilers came out.

200 1 A new generation of wall-mounted and floor-mounted boilers for latent heat recovery is introduced.

In 2004, the fuel cell technology was successfully applied to the cogeneration system of heating, power generation and domestic hot water, and became the EU industrial standard. Product sales reached 40 million units.

In 2005, the intelligent online service communication system vrnetDIALOG was introduced to connect with the Internet, thus realizing remote control and online diagnosis, setting and monitoring.

In 2006, Weineng Group invested 1 100 million yuan to set up a factory in Wuxi, China, and established the first production and R&D base outside Europe.