Interop PyTorch with TensorFlow(Lite)

Hi,

Are there some torch scripts, modules, converter options using PyTorch to import/export models of TensorFlow (pb, pbtx, h5) and TensroflowLite format (tflite)?
Or any idea how to import models, do some processing (e.g PoststTrainingQuantization, QAT, other optimizations, etc…) in PyTorch and export model?

Thank you