Toyota Supplier Shifts Gears With Menstrual Cups in Asia Markets

A Japanese auto parts maker is betting on an unlikely new growth engine: menstrual cups.

Nagoya-based GomunoInaki Co., which supplies rubber components to Toyota Motor Corp. and Denso Corp., is doubling down on its silicone period cups with a plan to start overseas sales this year, as the shift to electric vehicles spurs more companies to brace for shrinking demand for combustion-engine parts.