Apple will launch the third-generation iPad in mainland China on July 27, according to a new report. Citing Chinese-language PCPOP, M.I.C. Gadget reports that the device will be available for purchase in Apple’s company-owned retail stores, as well as in Suning electronics stores. Strangely, the device suggests that Apple will refrain from launching the Wi-Fi + Cellular model in the country—a move that would be highly unusual, considering…