An intake port structure for an internal combustion engine according to the invention includes a valve shaft provided in an intake port; and an airflow control valve that is supported by the valve shaft at one end of the airflow control valve or at a position near the one end. An elongated conveyor is mounted on the frame for carrying a meat products towards and through the injection station. The two bonds may be used for the same or a different purpose, and may be selected for the following attributes: hermeticity, electrical conductivity, low RF loss, high adhesive strength, leak resistance, thermal conductivity. Sealed in this way a pressure gauge permits testing to assure that the piping assemblies and coil are leak free, and readily assessing that zone-control units remain leak free until they are about to be installed into a building’s HVAC system. The invention further provides compositions for inks, thermoplastics, plasticizers, plastisols, crude grinding and flush.