Xi'an City Quality and Technical Supervision Bureau 2009 annual energy-saving lamp product quality supervision spot check results unqualified list
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2009 China's lighting industry crisis behind the new hope government revitalization plan to promote the future market of China's lighting industry lighting enterprises: hit the countryside (Figure)
Exclusive interview with the Chairman of the International Commission on Illumination (CIE) CIE Chairman visited the National Lighting Quality Supervision and Inspection Center CIE Chairman's special speech wonderful scene graphic report (Figure)
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The first Programmable Logic Controllers were designed and developed by Modicon as a relay re-placer for GM and Landis
These controllers eliminated the need for rewiring and adding additional hardware for each new configuration of logic.
The new system drastically increased the functionality of the controls while reducing the cabinet space that housed the logic.
The first PLC, model 084, was invented by Dick Morley in 1969.The first commercial successful PLC, the 184, was introduced in 1973 which was designed by Michael Greenberg.
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