Hong Kong/Seoul CNN — SK Hynix, a South Korean chipmaker, is investigating how two of its memory chips mysteriously ended up inside the Mate 60 Pro, a controversial smartphone launched by Huawei last week. Shares in Hynix fell more than 4% on Friday after it emerged that two of its products, a 12 gigabyte (GB) LPDDR5 chip and 512 GB NAND flash memory chip, were found inside the Huawei handset by TechInsights, a research organization based in Canada specializing in semiconductors, which took the phone apart for analysis. “The significance of the development is that there are restrictions on what…