Do you need a business sign? Are you looking for a St Louis sign company? Get your LED Sign or Neon Sign in St Louis from SOI Outdoor Sign Company! If you are a business looking for a sign shop, we can help you with any type of outdoor sign. SOI can also provide you with any type of custom sign, neon sign, LED sign, Digital sign or LED Display. We have custom signs all over St. Louis. We specialize in all types of business signs including neon signage, LED displays, digital signs and road signs! SOI Outdoor Sign Company is the St Louis sign company for you. SOI is a highly experienced sign shop dealing with every aspect of the business sign industry. S.O.I. strives to be the number one custom sign company in the St. Louis area. All of our custom signage including wall signs, ground signs a