Zetwerk, a business-to-business platform for custom manufacturing, has raised $9 million in a Series A round from new investor Accel Partners and existing investors—Sequoia Capital and Kae Capital. Zetwerk is a technology platform for on-demand manufacturing of custom products. On the demand side, it works with mid-to-large OEM (original equipment manufacturers) companies from India and South-East Asia, who want to procure custom products and machine parts that are not available off-the-shelf. The startup aims to build the world’s largest procurement platform focused on manufacturing.