High frequency inverter vs low frequency inverter, which one you picked?

[@dangbro]

Very nice 👍🏻

[@InkPV-Solar-Panel-Factory]

Thank you so much for support.

[@kickgas7171]

The low frequency model with the Toroidal transformer looks very nice. How can I order samples for testing?

[@InkPV-Solar-Panel-Factory]

Can you contact [e-mail]? Thank you very much