For the very best training, consulting & certification programs Lean Six Sigma (Lean Sigma) & Design for Six Sigma (DFSS), please contact one of SigmaPro's international offices or partners. SigmaPro is a full service consulting firm, with exceptional offerings for Executive, Champion, Master Black Belt (MBB), Black Belt, and Green Belt training and certification. SigmaPro also offers specializations for service and industrial firms, on-site coaching/mentoring, as well is project selection, innovation, voice of the customer & supplement training for all levels of Six Sigma deployment.