AAC (Autoclaved Aerated Concrete) was invented in the mid-1920s by the Swedish architect and inventor Johan Axel Eriksson. AAC is one of the major achievements of the 20th century in the field of cons...
Show moreWe don't support landscape mode yet. Please go back to Portrait mode for the best experience.
Typically replies within a day
Hi there
How can I help you?
12:06