- Registered Address : 171 Tras Street #05-179 Union Bldg, S 079025 Mailing Address : Blk 190 Bishan Street 13 #17-425 S 570190 Tel : (65) 6 256 3638 Fax : (65) 6 258 9096 Email : otbp@pacific.net.sg Our company is a registered company. We have the ready software to do your monthly accounts for you. Not only are we specialised in bookkeeping and payroll we are also knowledgeable in all Human ...www.ontime.com.sg