The e-commerce part of the business, however, is nascent. Analysts state the B2B e-commerce market would not exceed $1-1.5 bn. And, is primarily driven by companies dealing in industrial goods. Mjunction, a 50:50 partnership between Tata Steel and Steel Authority of India, which sells steel online, is the category leader. The more popular business-to-customer (B2C) e-commerce market, dominated by Flipkart, Snapdeal, Amazon and Paytm, is worth $5-6 bn.