As you want to my help to know about Hindustan Petroleum Corporation Limited, India here I will gather details.

The Hindustan Petroleum Corporation Limited, India is an is an Indian state-owned company which also owns and operates the largest lube refinery in India producing lube base oils over 40% of India's total lube base oil production.

Products
Aviation

Bulk Fuels & Specialities

International Trade

LPG (HP GAS)

Lubes (HP Lubes)

Retail (Petrol Pumps etc.)

Product Pipelines

Alternate Energy

Major Facilities
Mumbai refinery - Fuel & Lubes
Vizag refinery - Fuel.
Mangalore - MRPL
Batinda - HMEL
Lube, Grease & Specialities - State of art plant at Silvassa. (One of the most advanced fully automated Installation in Asia)
Lube & Grease mfg facility - Mazagaon, Mumbai.
LPG storage Cavern - one of the biggest storage facility of LPG in Asia at Vizag - SALPG[
Pipelines - MBPL, MPSPL, MDPL, VVSPL.
Several Terminals & depots.
Many LPG bottling plants.

Address:-
Hindustan Petroleum Corporation Limited
Petroleum House, 17,
Jamshedji Tata Road,
Mumbai 400020