Sandwich system athletic track/ running track is the most cheap and nice running track for high school, university, and stadium. The service life of Sandwich system could reach 10-15 years, and cost just USD 17.5 per Square meters. It's also IAAF certificate, and very easy to maintain. We ACA rubber could offer you all materials and installation, and give you 3 years warranty. Every year, we installed 25 different system Athletic track in China and over 10 different system Athletic track abroad. If you have interesting to build a athletic track, please get in touch with us. our web: www.acarubber.com, my email: [email protected] ; my cellphone & WhatsApp : 0086 139 1285 6535