Hong Kong (CNN Business)Ships in Chinese waters are disappearing from industry tracking systems, creating yet another headache for the global supply chain. China's growing isolation from the rest of the world — along with a deepening mistrust of foreign influence — may be to blame. Analysts say they started noticing the drop-off in shipping traffic toward the end of October, as China prepared to enact legislation governing data privacy. Usually, shipping data companies are able to track ships worldwide because they are fitted with an Automatic Identification System, or AIS, transceiver. This system allows ships to send information — such...