Namgyal today personally handed over the invitation from Tobgay to the chief minister at the state secretariat.
"We are waiting for the confirmation and we have requested the chief minister that it should be at a mutually convenient date," Namgyal said at a programme.
He said that business would definitely come up in the talks between the two leaders and it would be a 'positive' for both.
"Proximity counts and the immediate state next to Bhutan is West Bengal. We have benefitted from our relation with West Bengal. It will be a very good beginning for starting such visits at a larger scale," he added.
"While we welcome businesses, we will definitely keep in mind the environmental aspects. They have to be within the ambit of the environment preservations and the laws that are invoked in the country."
He said "we import a lot of raw materials with regard to all industries which exist in Bhutan.