Chennai-based Kobster, an online procurement portal for office supplies, has raised an undisclosed amount in a pre-series A round of funding led by Japanese seed investment firm Incubate Fund, a company statement said. Chandigarh Angel Network, Angel Network Middle East (ANME) and investors on the LetsVenture platform also participated in the round. “In India, the office supply and MRO (maintenance, repair and operations) market are highly fragmented and still most of them do offline transactions.