Dry and large flow concrete is used to solve the problems of unreasonable gradation of sand and stone, excessive stone powder, machine-made sand, bottom glue, low-grade large flow concrete, and poor waterline and workability after pumping and coagula…
The spread of the novel coronavirus is taking a direct hit on the operations of airlines in Asia. About 500,000 flights taking off and landing in mainland China have been canceled since January, according to aviation information company Cerium. Touri…
Germanium dioxide (the molecular formula GeO2) is a powder. It's used mostly to produce metal germanium. Purity: 99.99%, 99.999%Particle sizes: 100mesh-300mesh Germanium Oxide GeO2 powder: Germanium dioxid also known as Germanium ole, is an orga…
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