TO satisfy our customers, MKS has implemented the ISO9001 and IATF16949 quality system to guarantee the quality of FPCB, Membrane Switch, and other products. Our QA system and various inspection equipment help us to monitor the whole production process, assuring the stability of the process and product quality, meanwhile, advanced instruments and technology methods have been introduced to attain sustained improvement. There are many advanced inspection and test instruments in MKS, which assure products reliability of finished products. Our products comply with UL safety certification 94V-0. Our UL number is UL-E200944. All our PCBs meet a flame rating of 94V-0 and satisfy all UL requirements. The flame rating per UL 94 defines a polymeric part‘s resistance to fire.