... sample charge will be returned according to the quantity your order;Lead time:3-9 days, ... depend on the order quantity;Packagingopp package, white box, mail box, color ... , GW:20kg;Shipping term:Small quantity, DHL/Fedex/UPS/EMS, express freight;Big quantity, sea/air freight;Payment ... before shipment;Certificate:SGS,FDA report Feature of Small Calculator: 1.8 digit, solar power calculator, ...