The European Commission has submitted to member states a new draft of sanctions against Russia, including an oil embargo. Some member states that rely heavily on Russian energy sought exemptions. Western media reported that the European Commission d…
The purchasing pace at the demand end of the international thermal coal market continues to slow down and the international thermal coal price continues to decline. Prices for thermal coal at major international ports continued to fall last week as b…
Spherical Aluminum Oxide Powder…
Polycarboxylic acid superplasticizers are used as high range superplasticizers in high performance concrete.Water content:3.6%pH:8Total alkali:5.8%Gas content:3.1%…
Since colloidal semiconductor nanomaterials were synthesized in the 1990s they show many photophysical properties different from bulk semiconductor materials because of their very small physical size. Among them spherical semiconductor collo…
Silicon dioxide is the most abundant mineral in the earth's crust. It is found on all continents in forms ranging from fine powders to huge rock crystals.…
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