We know thatthe penis also known asfountain pen,becausepenthe water itself ismade ofwater andwater-solublemodulatingtoner, so thepeniswater-basedpen,ball penrefillthe liquidisoily, sois oilyballpointpen.thegel penis different fromthe liquidwateris different fromballpointpenswithin the coreof theoilyliquid,but anorganicsolvent, it is calledGelGelbuiltan organicsolvent,itsviscositythanoilinkis low,thickthanwater-basedink,whenwriting, theinkthrough thenib, it willturninto asemi-solidliquidink,gel peninkisthe biggestadvantage ofevery drop ofinkareused inthe tip,will notevaporate,leak,whichprovidessilkysmoothwritinga generalsense,the inkflowssmoothlyand stable.Geloriginated inJapanin 1988,successfully developedin JapanPENTELCorporationis known as"HYBRID''products, gel penswhichgave birthbecause ofgel pensbothfountain penandball-point penofthe advantages ofwritingfeelcomfortable,sopopularpeople'sfavorite,the rapiddevelopment in recent years,a greattendency toreplace theball-point pen.