CIOE 2019（Shenzhen, China），Date 4th-7th Sept., Booth 7H39-40

LASER WORLD OF PHOTONICS 2019 (Munich,German), Date 24th-27th June, Booth B1.140-9 

    OPIE 2019(Yokohama,Japan), Date 24th-26th April, Booth C11

CIOE 2018（Shenzhen, China），Date 5th-8th Sept., Booth 7H30-7H31

   OPTATEC 2018 (Frankfurt,German), Date 15th-17th May， Booth A14-2