Data And Communication Technology / Computers And Hardwares Requests

I need a manufacturer of microphones.

need name of manafacturers sals sound systems like Amplifiers , wall speaker , proffesinal wirless microphones.... etc

In important examinations, signing up, statistics, cadres evaluation, voting,Analysis of student achievement ,especially in population, industry, agriculture, maintenance, diseases and forestry industries, which require heavy reading. Mainly in European countries.

Optical Mark Reader(OMR Scanner) is a high-tech data input device . NANHAO OMR can be widely used in education examinations, signing up, subject choice, data statistics and evaluation in fields such as vote, transportation, human resources, fiscal taxation and finance and so on.