In the service of Science and Technology since 1950
AQ Chowdhury Baridhara Central Plaza, Floor 2 87, Suhrwardy Avenue, Baridhara Dhaka - 1212, Bangladesh Tel : (8802) 9862272, 9894533 & 8625121 Fax : (8802) 8854428 Email: aqchowdhury@aqchowdhury.com aqcss@siriusbb.com aqcsi@aqchowdhury.com