ble.Quality Control: All the machines will be inspected carefully before delivery. Oversea service: We have agent in different countries, 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.