A specialized book covering the fundamentals and applications of concrete diagnostic technology. - Title: Concrete Diagnostic Technology '20 [Applications Edition] - Publisher: Japan Concrete Institute - Title: Concrete Diagnostic Technology '20 [Fundamentals Edition] Thank you for viewing. There are some lines drawn, but the condition is good. If you start studying now, you should be able to pass by fiscal year 2026. I managed to pass this year. I think it's best to start learning early.