A technician, who has been charged with allegedly manufacturing a bomb outside a village house in northern Hong Kong, will face round-the-clock surveillance after he was granted bail on Friday.In an unprecedented arrangement, High Court judge Justice Albert Wong Sung-hau ordered surveillance cameras to be installed at Wong Wai-yin’s home, the warehouse he worked at, and three other locations as requested by police.Wong, 29, faces one count of making explosive substance dinitrotoluene (DNT) on…