transformer 1.whole process quality control 2.competitive price 3.large number testing ... .High grade raw materials from world famous suppliers. 2. IQC,CDC,IPQC,IPOC,QE,FQC,QA and ... 20 turn ratio testere,40 comprehensive testers together with strong R & D team and QA operators, ... and SPC management systems ensure the qulaity consistance. 5.With over 1000 workers,we can provide timely delivery. C.Photos: ...