Special material,smooth writing,durable. Special contents ink,vivid color,water resistance. refill can be as customer like DescriptionIterm No.:I-102material:new plasticadvantage:smoothly writting,good quanlity,fast selling in the market.no leakage, non Toxic.Payment1) Payment method: T/T2) Payment terms: 30% deposit on order, balanced by T/T before shipmentDelivery1) Delivery method: by ship, ...