Defence Public Sector Undertaking (DPSU) Bharat Electronic Limited (BEL) on the directions of Ministry of Health and Family Welfare has taken up manufacture and supply of 30,000 ventilators within two months for Intensive Care Units (ICU) in the country, the Defence Ministry said on Saturday. In addition another DPSU, Bharat Dynamics Limited (BDL) is also developing a ventilator which is to be tested soon.