... CE,RoHS,ISO9001:2000 Wind turbine knowledgeCommon Fault and Maintenance.1,No charge.Reasons:Generator output wiring is short, ... broken or corrosion.Solutions:Check and mend it. Effsun service promisePre-sale service1,We offer free new energe technology,products ... saving enery penny for you!.Selling1,Abide by the contract,active service through whole process.2,Quality first,delivery on time ...