President Obama is coming to Charlotte Friday tour the Celgard plant near Carowinds.
Celgard has been among the most prominent examples of the green-energy jobs that Charlotte's economic development leaders hope to expand. The company makes porous membranes for rechargeable lithium-ion batteries used in notebook computers, digital cameras and other devices.
The company has operations in Charlotte, France, China, Japan and South Korea.
Here's a .pdf overview of Celgard, from the company's Website.