GSI Contractors - Special Trade GSI Contractors - Special Trade Search | Advanced Search | New Members | Coupons and Discounts | All Categories Sort alphabetically by... Name City Crux Subsurface, Inc. _ 4308 N Barker RdSpokane Valley, WA 99027 (509) 892-9409 Member Since: 2010 Learn More | Visit Site Berry Built & Design, Inc. _ 204 S Koren Rd, Ste 800Spokane, WA 99212 (509) 534-5410 Member Since: 2013 Learn More | Visit Site Evco Sound & Electronics _ 3511 E Trent AveSpokane, WA 99202 (509) 535-8718 Member Since: 2014 Learn More | Visit Site Pro Mechanical Services Inc, _ PO Box 6526Spokane, WA 99217 (509) 483-1305 Member Since: 1990 Learn More | Visit Site If your business isn't here, contact us today to get listed!