1.Solid core li1.UL and CE certification 2.Delivery time:20 days 3.Good service after sale 4.Competitive price in this line This filter is recognized widely for the reason of using multiple hole mold filter core made of the mixture mixed by a high effective drier.Feature:Strong water absorbing abilityEliminate oxide, residue of welding, coal granule, oil block, impurity and othersSuper strong ...