@rhtdm.6624...
It does not the matter if it is in company name or personal name, it is a matter of the total amount of purchase allowed by West Bengal Govt.
If your invoice value exceed that amount then form 50 is mandatory otherwise the sales tax people have full right to seize the item, likewise if you under invoice the product and send and if it is checked then you will be held guilty for under invoicing, the product will be seized and legal proceeding will be initiated aganist you for fraud.
This is the situation in West Bengal. Only its people can do something about it if at all.
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