Secure the public place,the office and the house having no explosion,metal knife
drug for the safety, yes, airport, real estate,office,house do such a job everyday.
Help me to promote the detector explosion,detector drug,detector metal etc
to make money!!!
Promote to who? Promote to airport,rich person,transportation agency,
the company of real estate,etc.
I am Liu Shangwu, a salesman in China, trust me, you can do it.