Because rubber, glass, metal alloys and other materials have defects in corrosion resistance, it is difficult to meet the harsh environment of temperature, pressure and chemical media coexisting, and the losses caused by this are quite aston…
The fine polytetrafluoroethylene powder must maintain the powder shape and can still be poured after adding the extrusion aid. During transportation, severe vibration should be avoided as much as possible to prevent the powder from agglomer…
CEO of Pfizer partner BioNTech says coming winter will be hard but by April, 300 million immunization units should be ready, which will have an impact on the global pandemic.If coronavirus vaccination…
CEO of Pfizer partner BioNTech says coming winter will be hard but by April, 300 million immunization units should be ready, which will have an impact on the global pandemic.If coronavirus vaccination…
CEO of Pfizer partner BioNTech says coming winter will be hard but by April, 300 million immunization units should be ready, which will have an impact on the global pandemic.If coronavirus vaccination…
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