16-National Technical Committee for Standardization of Health Services (Observer Unit)Electrothermal film with 16-double edge seal16-CERTIFICATE OF COMPLISNCE17-letter of appointment (far infrared industry quotation) periodical consultantStructure improvement of 17-microcrystal electrothermal film heating plate17-CERTIFICATE OF COMPLISNCE-218-Thank you18-far infrared heating plate19-Thanksgiving note-219-A hot line20-thank you-320-Electric heating film radiation convection wall heating-21-safe electrothermal film with high electrothermal conversion rate22-convection floor heating system23-jet convection heater