Contractors State License Preparation Wants you to join us in #congratulating our newly licensed contractor Alonso Ayala-Lopez who obtained his C-20 Warm-Air Heating, Ventilating and Air-Conditioning #contractorslicense! Alonso utilized our materials and classes, and was able to crush the state exams! #Congratulations Alonso on your huge #accomplishment!! Alonso was registered in our El Monte location which is located in Los Angeles County California. Alonso chose our contractors license of course he was able to crush the C-20 Warm-Air Heating, Ventilating and Air-Conditioning Contractors License Exam!