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The chemical industry’s equipment has seen significant development over the past decade; we praise the prosperity and strength of modern China. Wishing everyone a happy New Year, and may their families be safe and healthy. By contributing our ideas, we can create a more lively atmosphere for discussion. HaiChuan becomes even better with your participation – we encourage everyone to engage more in discussions on this forum. **********************************************China is rich in coal but lacks oil and gas; therefore, developing technologies for the clean and efficient use of coal, as well as expanding sources of liquid fuels, is crucial for ensuring energy security and reducing environmental pressures. The first million-ton-scale demonstration project for direct coal-to-oil conversion in China, built by the Ordos Coal-to-Oil Branch, is part of **the energy strategy. The first production line of the Ordos coal-to-oil demonstration project began construction in 2004, with a design capacity to produce 1.08 million tons per year of products such as diesel and naphtha; it was completed and successfully tested by the end of 2008. At the beginning of the production line construction, due to the limitations in China’s equipment manufacturing capabilities, many key pieces of equipment were imported. Not only were the purchase costs high, but the performance of some of these imported devices was also insufficient to ensure the stable operation of the production line over long periods of time. The high differential pressure relief valve acts as a checkpoint connecting the hydrogenation reactor to the downstream production processes, and it is crucial for the stable operation of the production line. Initially, all 4 high differential pressure relief valves used on the production line were imported products, with a purchase price of 8.8 million RMB per valve; however, the lifespan of their valve cores was only around 70 hours. Over the past decade or so, the Ordos Coal-to-Oil Branch has worked continuously in collaboration with domestic research institutions and manufacturers to improve performance. The current record for the service life of domestically produced valve cores is 2,701 hours, and entire high-differential-pressure pressure relief valves have now also been manufactured domestically; the price of each set of such domestic products is over 2 million yuan.