one reason louis wu, our executive host said, it took several months and several suicides, before foxconnere shaken into action. >> at the beginning, we see a few suicides. but we didn't really see there was an effect. until the fifth or the sixth one. >> reporter: he says apple's number two man at the top, tim cook, flew to shenzhen, and helped build a team of experts, to make nets, to make impulsive souls think twice before jumping. foxconn raised wages and they opened up this counseling center. why do you think they happened at the same time? there are many reasons, she tells me. but they had mostly to do with the migrant workers, their state of mind, how they cope with society. also, it's hard to make friends here, she says. but it wasn't just the suicides that caught the world's attention. >> explosion hit a foxconn plant. >> reporter: last year, poorly-ventilated aluminum dust led to two separate explosions, killing 4, injuring 77. there is one labor rights group in the country who claims they tried to warn you about combustible dust before the explosions. is that true? do you have