BAY CITY (WWJ) — Why import these important parts from China when we can make them right here in Michigan? That's the gist of the message as Gov. Gretchen Whitmer on Thursday joined business, state, and local officials to celebrate what she says calls Michigan's "bold investments" in semiconductor and polysilicon (aka computer chip) manufacturing. A ribbon cutting was held Thursday for semiconductor wafer manufacturer SK Siltron’s new facility in Bay City, after Whitmer fought for and secured a $300 million investment, according to the governor's office. Whitmer says that moving the critical semiconductor supply chain home from China to…