That seller might have a couple of correct attributions, but in general his descriptions and attributions should be ignored. He's been selling and collecting a long time, and doesn't have any excuse for calling the orange bottle "Barovier" when it clearly is not (it's most likely Barbini), and the piece Jay linked to "Seguso, Poli" when it's contemporary, by Formia.
If you want to see the Chinese sommersos, seach ebay for seller thewesternart.