what's heavy printed circuit board ?inner copper or outer copper,if over 3oz(105um),we call it heavy pcb board.The mainly controls the difficultiesits line width and line space;the copper more thick,the line width and line space requirement more higher;heavy copper pcb advantagesThe thicker of the copper of the circuit boards,Products of heat dissipation more better.The thicker the copper can carry more greater current.PCB board SpecificationsPcb thickness:2.0mmLayer account:4-LayerSurface finished:immersion gold;Line width&space6/8milsFinished copper:6oz outerSolder mask:green;Material:FR4.Certificates:CQC,ISO.TS16949,SGS,ISO9001,UL,ISO.14001,ROHSDelivery time:sample 3-5days,mass production:10-12days;Package details:vacuum pcb,inside bubble all inside,cartoon,ties outside strengthening;KDPCB Advantages1--never set any moq;2--fast response;3--competitive price;4--support "one-stop"service for part of clients;5--shortest delivery time;6--"5S"and ISO.TS16949 quality system;7--professional,high communication,trustworthy;8--all kinds of pcb board manufacture are acceptable;9--cheap price onTNT/UPS/DHL/FEDEX/special shipping agency support;KDPCB pcb manufacturer has years heavy copper pcb circuit boards manufacturing experience since 2006 build KDPCB company,all kdpcb engineers was working in HDI pcb for over 10 years,which most of them also have lot of practise of heavy copper pcb manufacture,they also teach some china unversity students how to produce it with better method.kdpcb is a qulity oriented pcb manufacturer in china,never price firstly,our purpose is to be a global stragetic pcb manufacturer,we always use the famous pcb material supplier,and build a long term relationship with them,that's why kdpcb is difference from others pcb suppliers in china.high quality and reasonable price.application fieldSolar power converters,Safety and signal systems,Renewable energies and storage pumping plants,Torque controls,High power rectifiers,Overload relays,Power converters for railway systems,Power line monitors,Traction converters for rail applications,UPS systems,Electric vehicle charging (commercial and industrial),Protection relays,Excitation systems for power regulators,Position control systems,Power grid switching systems,HVAC systems,Energy storage and power grid back up,Nuclear power applications,Line reactors,Hydro-electric plants,Surge protectors,Fuse blocks,Welding Equipment,Weapons control systems,Radar systems and others;