Visit pre-registration of the 22nd National Aluminum Door, Window and Curtain Wall New Products Expo

Visit pre-registration, pass the badge directly to your hand, and have a better chance to win the prize for free:

Third prize: Exquisite USB flash disk (2 per month)

Second prize: Xinchao Solar Power Charging Bank (1 person per month)

First prize: two nights in a star hotel (3 in total)
http://www.windoorexpo.com/windows-door-facade-exhibition-1-62.html

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