Customs are important. Make sure you are not stepping on them or sitting on them.
If you are trying to do business with a phrase book and a few words you picked up in the service, you are doing your business a great diservice.
In today's multicutural, multiracial, multilingual society, there is no way you can know the people and hte customs well encough to conduct business.
Fortunately for you, you may find translation for India, Arabic, Farsi and Hindi languages at one place. IAFL Translation & Interpretation Services is the leading translation agency in India.