Researchers in China have fabricated a carbon-based perovskite solar cells that achieves almost the same efficiency as perovskite counterparts based on gold electrodes while also providing higher ...
Berkshire Hathaway on Friday disclosed a new $2.65 billion investment in Delta Air Lines and a small stake in Macy's , and said it sold many of its smaller ‌stock holdings including Amazon.com , ...
NEW DELHI (Reuters) - Indian manufacturers of graphite electrodes used in electric arc furnaces are booming on the back of China's pollution crackdown, but soaring prices have set the companies on a ...
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