HZR ESD LIMITED is a professional manufacturer of ESD test instruments,including wrist strap tester,surface resistance meter,Combo tester,continuous monitoring system,calibration unit,door locking system,ohmmter etc,for more details please browse our website www.esd-hzr.com .All items can be provided OEM services and has one year warranty .However we still produce wrist strap,heel grounder,grounding cord,ESD field service toolkit,anti-static brush,tweezers