Protective inflatable heat shield for use in protecting individuals during the repair, maintenance, and refurbishment of heat exchangers

Maintenance, refurbishing and repair services for heat exchangers and heat transfer equipment

Equipment related to the maintenance, refurbishment and repair of heat exchangers

Refractory material primarily not of metal, namely, refractory material for use in the manufacture of precast shapes; Refractory precast shapes primarily not of metal

Sealing and insulating materials

Refractory material primarily not of metal, namely, refractory material for use in the manufacture of precast shapes; Refractory precast shapes primarily not of metal