Certified Testing Services Inc Categories Testing PO Box 1193 Sioux City IA 51102-1193 (712) 252-5132 (712) 252-0110 Visit Website About Us Construction - Material Testing Rep/Contact Info Matt Dailey × Matt Dailey President - Co-Owner Jed McInerney × Jed McInerney Vice President - Co-owner Share × Print Email Facebook Twitter LinkedIn Tell a Friend ×