Here is their website:
http://www.dabur.com/welcome.htm
Their corporate address is:
Kaushambi
Ghaziabad – 201010
Uttar Pradesh, India
Their phone numbers are:
+91 (0120) 3982000 (30 Lines)
+91 (0120) 3001000 (30 Lines)
You can find a complete list of contacts here:
http://www.dabur.com/en/about/Addresses.asp