e delivery.Oversea service: We have agent in different countries,Website:http://www.cngaohe.net, so oversea service is available.Certificate: CEPacking: The quantity under 10 sets packed in single wooden case, over 10 sets order will load in full container.Delivery Time: Order quantity smaller than 10 sets, delivery time is 20 days; order quantity over 10 sets, the delivery time is 30 days.?