You must pass two qualifying exams in orthodontic assisting and infection control to become a Certified Orthodontic Assistant. As of April 2011, DANB certification for OAs was recognized in 38 states and required in four - Massachusetts, Maryland, New Jersey and Oregon.
American Standard Companies, Inc. was a global manufacturer of plumbing, heating, ventilating and air conditioning (HVAC) systems and services, bath and kitchen products and vehicle control systems.he company was formed in 1929 through the merger of the American Radiator Company and Standard Sanitary Manufacturing Company forming the American Radiator and Standard Sanitary Corporation. The group was renamed to the American Standard Corporation in 1967.
Trane Air Conditioners Price List. Trane makes one of the most complete lines of central air conditioners on the market. This Trane air conditioners price list will provide an overview of their models as well as offer sample pricing for each one. The prices we offer are not straight from Trane but are gathered through reader input as well as our monitoring of the market.