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Established in 1987, SHANGHAI SDAR ELECTRONIC INSTRUMETNS CO., LTD. worked together with A.W. SPERRY to develop inside-magnetism meters and succeeded in the trial research and production. Therefore, we are the first company in China that brings in this American technology. In the first year of its establishment, the output of model SP -5A of WENZHOU LUCHENG SDAR ELECTRONIC INSTRUMENTS CO., LTD. has achieved 150,000, which has broken the producing record of meters in China . Thereafter, we brought in the series of SP-5B, SP-BT, SP -20A etc, some of which are still in production.
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In 1990, we passed the national quality certification.
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