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今春,我们在黄山公社中朱冬大队自力更生建厂,对保墒增温剂的土法生产进行了反复试验,终于试制成功,并已成批生产。经
In the spring of this year, Zhu Dong Brigade in Huangshan Commune relied on its own efforts to build a factory. The trial trial of soil-law production of preservatives for warming soil moisture was carried out repeatedly, and it was finally trial-produced successfully and has been mass-produced. through