GSI Electrical Supplies and Equipment GSI Electrical Supplies and Equipment Search | Advanced Search | New Members | Coupons and Discounts | All Categories Sort alphabetically by... Name City Columbia Electric Supply _ 5818 E Broadway AveSpokane Valley, WA 99212 (509) 325-4500 Member Since: 2013 Find Solutions to Your Unique Manufacturing Challenges Learn More | Visit Site Stoneway Electric Supply _ PO Box 4037Spokane, WA 99220 (509) 535-2933 Member Since: 2005 Learn More | Visit Site If your business isn't here, contact us today to get listed!