After a key Japanese partner’s output was disrupted, Bloomberg News reported on Wednesday that Apple Inc (AAPL.O) is looking for new suppliers for memory chips used in its iPhones, including a potential first Chinese supplier. Last month, Kioxia Holdings Corp, a key supplier of flash memory chips to Apple, reported contamination at two of its manufacturing plants, resulting in reduced production, according to the firm. find out more According to the source, Apple is currently testing prototype NAND flash memory chips from Chinese semiconductor giant Yangtze Memory Technologies Co, and the two companies have been talking for months. Yangtze did…