Hello Dean,

Thank you for your questions (very interesting)
Yes you can sell from oversea and ship in China, but it should be high end furnitures.
Shipment is taken by Clients, that want imported high quality furniture.
Cost depend on the size country etc… you can ask a logistic company to give you a quote (their job)

Yes you have to declare to customs, and the logistic company can assist on on that too.
Sell furniture from oversea is quite interesting niche profitable business at this moment.
Davinci (a Chinese brand pretend to be italian) use to do that.
They produce in China, ship to Italy, put a Made in Italy and sell to Chinese as Made in Italy Brand, and they become super successful until… Chinese People discover the tricK.