Difference Landseer And Newfoundlands What Is The Difference Between A Newfoundland Landseer And A ECT Landseer?

What is the difference between a Newfoundland Landseer and a ECT Landseer? - difference landseer and newfoundlands

I want to buy a LAN and do research, I found someone selling a TEC Lanser. He explained that this is not a Newfoundland. I've seen pictures and it seems to me. Does anyone know the difference? I find no information on the Internet.