... corrugated / bellows tube, PFA sheet , PFA film , PFA welding rod. (2) FEP/F46 transparent tube, FEP insulation tube, FEP heat shrink tube, FEP coil tube, FEP corrugated / bellows tube, FEP film, FEP rods. (3 ... ) PTFE/F4 tube. At the same time ...