Beginning of the founding of the people's Republic of China and build factories. In the 1980 of the 20th century, I plant the first SBW-compensated voltage stabilizer.
中国人民共和国建国初期建厂。20世纪八十年代，我厂生产出国内第一台SBW补偿式电力稳压器。
2
Meanwhile, some special problems, such as test materials, spectrum band width (SBW), wavelength reproducibility, and expressing method of photo-metric accuracy, ard discussed.