Canadian e-commerce giant Shopify said on Tuesday it has partnered with China’s JD.com to let merchants in the United States sell to JD’s customers in China. The strategic partnership comes amid tight competition in the e-commerce space in China with players like Pinduoduo, Alibaba Group Holding and Douyin. Financial terms of the agreement were not disclosed. The deal will let Shopify merchants sell on JD’s cross-border platform JD Worldwide and open up access to its 550 million active customers in China, the companies said. Shopify merchants in the US can start selling their products in China within three to four…