I am being trained to become a NIOSH, Air Monitoring Technician ,as well as a contract supervisor .. i take this opportunity very serious . they have given me the chance to insure a better future .i answer phones, file paper work. I do what is asked of me.Sigma is a great company to work for . they are flexible and well organized . We are small in size but strong in well . our customer service is impeccable. At sigma the customer, the environment,& our staff ius the number one priority. no task is too great. no challenge too daunting. At Sigma we are here to help .