The Union’s position paper was developed by experts within its Department of Tobacco Control. Throughout its almost 100 year-existence The Union’s sole objective has been to protect and promote lung health. All its work is based on scientific evidence.
HNB products function by heating sticks made of compressed tobacco and other chemicals to a high enough temperature to generate an inhalable aerosol that contains nicotine along with many other chemicals. They differ from e-cigarettes which create a nicotine aerosol by heating a liquid.
You can read The Union’s position statement in full here.