Following an initial era designing and manufacturing various types of mechanical equipment and systems to produce passive ceramic and lead components, JOYIN specialised in passive electronic components, beginning production of Polymer Positive Temperature Coefficient (PPTC) devices more than 25 years ago. The varistors it produces comply with VDE, UL and CSA standards. All its components are compatible with RoHS and comply with the requirements REACH legislation. Its output is certified under ISO 9001 and ISO-TS16949.
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