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Keystone Technologies

Keystone has designed, engineered, and manufactured reliable ballasts and advanced lighting products for more than six decades.

Chapman Electric Supply, Inc. is an authorized distributor of Keystone Technologies products.

Electronic Flouorescent Ballast

Keystone's electronic ballasts are known for dependability and energy-efficiency. Our extensive...

Metal Halide Ballast Kits

Known for dependability and superior efficiency, our High Intensity Discharge (HID) ballasts are...

Chapman Electric Supply, Inc. has been serving the industrial, commercial, construction, utilities, electrical, telecommunications, mining, and other professional industries since 1958. We have the inventory and staff to make sure you have all the tools and supplies you need to get the job done. If you have questions or don’t see exactly what you need on our site, contact us and we'll help you find it.

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