How serious are fertility problems today? People don't want to give birth,can't afford it, and can't give birth that has become the "three mountains". The problem of childbirth is related to the people's livelihood. Whether a country can prosper or n…
What is sodium silicate? There are two types sodium silicates: Chemical formula Na2SiO3, Molecular formula 122.00. This is sodium metasilicate. The sodium orthosilicate is chemical formula Na4SiO4, with molecular formula 184.04. Sodium silicate (or s…
This article will introduce the dispersion, lubrication and steric resistance of water reducer.…