... advantages 1.Made from precious metal oxide.2. The Ceramic Tube Heater can produce much radiation infrared ray with a wavelength ... of Leather, Wood, Plywood, Printing and Dyeing Product, Paint, Ceramic Glaze, Medicine, Paper, Printed Matter, Food, Agricultural Products, Seafood ... Classroom, Farm and Chicken Farm, Sauna etc.Model Tube Dia (mm)Tube length (mm)TB-1212100~700TB-1414100~1500TB-1717100~2000TB ...