ranked 1 in the world among the b2b portal, generally its for export for Indian's but for rest its a good portal, its having various services from thousands to lakh.
INDIAMART.COM(Best suitable for Indian's)
ranked 2nd in the world among top b2b portal, generally its an Indian portal and is most suitable for Indian SME's , it had contributed a lot for promoting SME's .
its having various services like:- buy lead package
MDC(mini dynamic page) package
ILP(industrial leadership package)
ranked 3rd among the b2b portal, it is for SME's, company used to promote entrepreneur, and help them to explore his business through out the India, it also provide various service but is not able to provide that much ex-poser to his clients.
ranked 4th among best b2b portal and he also used to promote SME's on an online platform, help them to grow through online marketing, it is in growing phase and provide even equal competition to the above two competitors.
DO CHECK RANKING OF ABOVE PORTALS IN alexa.com BY TYPING THERE NAME IN THE SEARCH BOX.