E-commerce marketplace regulation: prohibiting inventory control and price influence to ensure fair, non-discriminatory vendor access. Regulatory amendments impose operational limits on e-commerce marketplace entities with foreign investment: marketplaces must not control vendor inventory (control is presumed when a substantial share of vendor purchases originate from the marketplace or its group), entities with marketplace equity or inventory control cannot sell on that marketplace, marketplaces must not influence sale prices, and services provided by marketplaces or their group to vendors must be at arm's length, fair and non-discriminatory. Seller exclusivity is prohibited and existing investments must comply from the notification date.