HTC, Inc (Heat Transfer Consultants) has changed name to Inspection Software Systems (ISS).

HTC, Inc.
 HTC have offered consulting and comprehensive software for thermal and mechanical design and analysis of TEMA - UHX shell and tube/air cooled heat exchangers and ASME pressure vessels for over 25 years. Our software packages are used around the world in the manufacturing, contracting and processing areas of the petro-chemical and power industries.
TubePro 4.0
Please visit Inspection Software Systems website www.ISSapps.com for information regarding 2D and 3D tube mapping, inspection and data management software applications.
Copyright 2008 HTC/ISS, Inc.