How does bad room air affect your health? Bad indoor air - what does it mean and how does it affect your health? People today spend 80-90% of their time Read more »
What is lime? Lime is a material obtained from limestone. Limestone is a mineral that is mostly mined by quarrying. Lime is a material with a long history, Read more »
What is clay? What is clay? Clay is a mineral by nature, which is very widespread in the world and consists of very Read more »