Source text: Apple has implemented a global purchase limit of two units per customer for the upcoming iPhone Duo, set to launch on October 23. The restriction applies across all markets, though Apple has not disclosed the reasoning behind the policy. In mainland China, the device is priced between 15,999 yuan and 26,499 yuan, with pre-orders opening on October 16. Secondary market demand appears elevated, with some resellers listing the 512GB model at 24,888 yuan—a premium of 6,889 yuan over the official retail price. Supply chain sources indicate production constraints may be driving the scarcity, citing a mass production yield rate of approximately 65% and daily output limited to a few hundred units. Analysts project total shipments of around 6 million units for the current year. Target language code: tr Translation instructions: This is the news article content. Please maintain the original meaning.