722 S.E.2d 798 (2012)
WACHS TECHNICAL SERVICES, LTD.
No. COA11-633.
WACHS TECHNICAL SERVICES, LTD.
v.
PRAXAIR DISTRIBUTION, INC.
No. COA11-633.
Court of Appeals of North Carolina.
Filed March 20, 2012.Case Reported Without Published Opinion.
Affirmed.