In the distribution of voltage, there are two situations, one is the AC situation, and the other i......
Security doors seldom pay attention to what locks are on their doors. As the saying goes, "A ke......
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Abstract Yesterday, the National Conference on Industry and Informatization was held in Beiji......
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The pesticides have different medicinal properties, different control objecti......
The average annual growth rate of the lock industry during the 11th Five-Year Plan period ......
[China Aluminum Industry Network] Aluminum products are common materials in daily life, but many pe......