The TUV logo is a secure authentication mark customized by German TUV for components products, and has been widely accepted in Germany and Europe. At the same time, enterprises can consolidate the CB certificate when applying for a TUV logo,…
OPEC+, an oil producers' alliance led by Saudi Arabia and Russia, stuck to its original plan to increase output by just 432,000 b/d in June, continuing to defy calls from major consumers led by the United States to pump more oil to keep prices down.…
What's silicon nitride? Silicon nitride This important structural ceramic material has high hardness and wear resistance. The atomic crystal resists high temperature oxidation. It can also resist cold or hot shocks. It can also be heated up to 10...…
This article introduces how to make foam cement and how to choose materials including cement and foaming agent.…
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