Los Angeles-based NuOrder Inc., a business-to-business wholesale e-commerce platform, closed on a $15 million Series C financing round. It was led by Radnor, Pa.-based venture capital firm NewSpring Holdings, which was joined by existing investors Upfront Ventures, of Santa Monica, and Argentum Group, of New York City. Details of the financial transaction were not disclosed. NuOrder has raised a total of $40 million to date. The company has more than 1,000 brand customers and 400,000 retailers making transactions on its platform. To date, $16 billion worth of gross merchandise volume has been sold on NuOrder, half of which took place in the last year. NuOrder has facilitated 3.3 million orders, with more than 212 million products purchased through the platform.