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   2013.11 Hong Kong Optical Fair
   2012.11聽Hong聽Kong聽Optical聽Fair
   2012.03 MIDO Optical Fair
   2011.11 Hong Kong Optical Fair
   2011.3 MIDO Fair
   2010.11 Hong Kong Optical Fair
   2010.3 MIDO Fair
   2010.2 Shanghai Optical Fair
   2009.11 Hong Kong Optical Fair
   2009.10 New Products