Core Tech International started as Sun Woo Corporation in 1991 and has grown from a three-person construction firm focusing on single-family housing to a multi-division firm with a combined workforce of over 1,200 people. This growth is a reflection of our commitment to our clients, our employees and our community.  One of the primary strengths of Core Tech is the diversity and depth of experience of our team. Included in our team of professionals are more than 82 architects and engineers, 12 CPAs, 8 property compliance specialists, 2 attorneys and numerous other safety, quality control and certified specialists.