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American Standard Halogen Lamp Engineering Lighting Mh400w Ed120 E39 Base High Light Efficiency Long Life Metal Halide Lamp - Buy Metal Halide Lamp,Mh400w,400w Ed120 Product on Alibaba.com
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:max_bytes(150000):strip_icc()/rs-best-light-bulbs-of-2022-tout-4254589c415d43798f0bcb709dc11bf1.jpg "The 10 Best Light Bulbs of 2023 | by Real Simple")
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Halogen lamps, explained by RP Photonics Encyclopedia; operation temperature, halogen cycle, luminous efficacy, energy efficiency
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U.S. Energy Information Administration - EIA - Independent Statistics and Analysis
