Youku is important for B2B marketing in China due to its large user base and popularity in the Chinese market. Youku offers a wide range of advertising options, including pre-roll ads, native ads, and sponsored content, which can allow B2B businesses to create and promote engaging and creative videos that resonate with their target audience. Additionally, Youku has advanced targeting capabilities and analytics tools, which can help businesses to accurately measure the success of their marketing campaigns and make data-driven decisions to continually improve their strategies. Overall, Youku is a valuable platform for B2B businesses looking to expand their reach and engage with potential customers in the Chinese market.