Xingyu electronic acoustic remote strong sound system in counter-terrorism forces a SWAT combat outstanding stability

Xingyu Electronic Exhibition acoustic remote strong sound system in Guangdong mobile communication skill in emergency

A prison in Hubei uses a series of sound system products to warn and shout

Yining Airport to drive birds, but

Dalian airport welcomes the special surveillance of bird strike prevention

The third military and civilian integration development exhibition of hi-tech equipment opened in Beijing