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2021 new junior high school physics optical experimental equipment full set of experimental box Optical Mechanics junior high school two eighth grade first volume experimental box optical bench instrument lens lens flat mirror small hole imaging set

 
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Brand:
Keda Hui
Color classification:
Standard version optical experiment box (new water lens) luxury version optical experiment box (water lens periscope three primary color lamp) Standard version Optical Mechanics 2 box combination luxury version optical power
Production Enterprises:
Wenzhou Xuefan Teaching Instrument Co., Ltd.
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