Supply Of Know-How / License, Bedp, Proprietary Catalyst, Proprietary Items, If Any And Other Related Services For Poly Vinyl Chloride Unit Pvc For Bpcl Refinery-Cum-Petrochemical Complex At Andhra Pradesh Ap, India Project Of Bpcl Ls/C113-000-La-T-8524/1024 - Supply Of Know-How / License, Bedp, Proprietary Catalyst, Proprietary Items, If Any And Other Related Services For Pvc Unit For Bpcl Refinery-Cum-Petrochemical Complex At Andhra Pradesh Ap, India