YI HITECH Limited: YI HITECH offers rapid prototyping, tooling design and manufacturing, plastic injection moulding, die casting plus precision CNC machining service, committing to provide customer
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Jiexiu Jinsheng Carbon Co., Ltd: The company can provide you with better carbon products, graphite electrodes, carbon bricks, carbon new materials. The products are widely used in metallurgy, energy,
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Shaoxing Puer Electrical Co., Ltd specialized in eye-protected desk lamps, floor lamps, LED cabinet light, such as T4/T5/T8. We will provide the best quality products and service for you.
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Our product range includes: electronic household products, mini rechargeable hand warmers, creative lights, USB fans, USB humidifiers, etc
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Nitrogen, a simple substance formed by nitrogen element, has the chemical formula N ∈. It is a colorless and tasteless inert gas under normal temperature and pressure. It can react with hydrogen to generate ammonia only under high temperature and pressure and catalyst conditions, and can combine with oxygen to generate nitric oxide under discharge; Even active metals such as Ca, Mg, Sr and Ba can react with them only when heated.