About Us I chose to work in this industry because I have always enjoyed in taking pleasure and delight with my cleaning service. We started are a family owned and operated business in 1966. This company was started as a one person business and has grown in just a few short years. We are proud to offer a guarantee that if it's not done right the first time, we will come back to fix it. Diamond QRC is dedicated to providing the highest value to you. We aren't happy unless ... YOU are happy.