【Haichuan Equipment Guessing Game】The first one from the 1950s, now on display in a museum

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Do you know what kind of device this is? Reply to see the hidden answer. The air compressor from Dahuai Group, collected by the Dalian Modern Museum, reflects the journey of innovation in China’s chemical industry. The predecessor of Dahuahua Group Co., Ltd. was Dalian Chemical Plant, which was established in May 1933 under the name \"Manchuria Chemical Industry Co., Ltd.\" After Japan’s surrender in 1945, the factory was taken over by the Soviet army. In 1947, it was renamed “Dalian Chemical Plant” and became a subsidiary of Jianxin Industrial Co., Ltd. After the founding of the People’s Republic of China, Dalian Chemical Plant set 19 records in the national chemical industry, earning it the title of \"the cradle of China’s chemical industry.\" In 2012, the Dalian Modern Museum acquired from Dahuagroup China’s first air compressor to be modified. This compressor is manufactured in Germany and has 1,340 horsepower. In early 1950, the Dalian Chemical Plant repaired this damaged equipment so that it could operate properly; the **raw materials it produced made a significant contribution to the victory in liberating Southwest China. In 1951, Premier Zhou Enlai made a special trip to Dahua to inspect the area and encouraged it to produce compressors of its own design for the Chinese people. In 1955, the people of Dahuacha designed and manufactured New China’s first domestically produced compressor, which is also on display in the museum. This is a large-scale nitrogen compressor for use in the chemical industry, with 2400 horsepower and 150 revolutions per minute; it embodies the spirit of hard work and dedication of the people working in the chemical industry, as well as reflecting the spirit of perseverance of the city of Dalian.