Flexible pipes, not of metal

Hydronic plumbing and heating systems, namely, complete in-floor heating and snow melting installations sold as a unit, consisting of heat transfer plates, pex-a and pex-c pipe, pipe spacing and locating track, pipe spacing and locating mats, expansion stripping, pipe couplings and adapters, mixing valves, mixing valve motors, mixing valve controllers, distribution manifolds, supply modules, balance or return, zone drive motors, thermostats, and set-back thermostats

Pharmaceutical and biological preparations for human use