Shein is leaning into third-party sellers to expand its product offerings.Screenshot/Shein Until recently, Shein has relied on sourcing its products through its on-demand manufacturing model. But to grow its offerings, the company opened its marketplace to third-party retailers. Shein's marketplace may invite more counterfeit and copyright infringement issues. Shein may be known for its fashionable dresses, skimpy swimsuits, and trendy halter tops, but you can now shop for home appliances, pet supplies, and fishing gear.Last month, the Chinese-owned e-commerce company expanded its marketplace beyond clothing and introduced home appliances, electronics, gardening supplies, and kitchen utensils, among other categories.