Plymouth, MA: 

Vacuum Process Technology (VPT) of Plymouth, MA, has closed a major partnership with a publicly traded, North American solar panel manufacturer.

Traditionally a leading manufacturer of batch and in-line vacuum thin-film deposition systems used for optical filters and photonics components, VPT possesses all the ingredients to make a significant impact in the photovoltaics industry. 

Mass High Tech:  The Journal of New England Technology