First, chlorination
Chlorine is a very effective oxidant for cyanide. Commonly used chlorine reagents are chlorine gas, sodium hypochlorite and calcium hypochlorite. Alkaline liquid chlorination is the most common me…
Zirconium metal is an important raw material of modern industry.
Zirconium (including niobium ) has good plasticity; the corrosion res…
From 钧多立, to Vision Optoelectronics, one LED company fell, which also cast a shadow over the development of LED enterprises. However, the confidence of domestic companies in the future of the industry has not diminished.
Government subsidies, venture capital and other…
The LED industry was once known as one of the four major mischievous businesses in the Taiwanese market, but in 2014 there was a chance to get rid of the name of the miserable industry. This is because with the reduction or suspension of subsidies to the LED industry in mainland China, and…
According to the statistics of the US Mines Bureau (the following table): the world's rare earth resources totaled 45 million tons of rare earth oxides, of which China accounted for 80%; the United States accounted for 11%; India accounted for 5%; the Soviet Uni…
Reference table for comprehensive evaluation of associated components of tin deposits
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When the furnace is designed, the highest temperature range of the furnace is the actual combustion temperature, and the temperature of the preheating section and the soaking section are lower than the actual combustion temperature.
Carbon dioxide and water vapor are the…
The LED industry chain includes epitaxial growth and chip fabrication, packaging and applications. According to the needs of the LED component structure, the upstream LED chip manufacturer first performs metal evaporation, then etches and heats the reticle on the epitaxial wafer to fabrica…
Not only limited to some brands, not just a few tens of dollars. The entire tire industry is continuously setting off a frenzy of rising prices in recent years…