Contact sheets are manufactured both by traditional and vacuum casting (silver-based alloys) and by powder mixing (silver-based pseudo-alloys). Amongst the materials that are added to the silver in order to produce a specific electric function, we employ graphite (AgC), nickel (AgNi), iron (AgFe), tungsten (AgW), tungsten carbide (AgWC). We are a Chinese manufacturer of electrical contacts which are used in the relays,switches,timers ,thermostats and breakers. Our products include: 1) electrical contact rivet: solid rivet, bimetal composite rivet, tri-metal composite rivet. The composition can be: AgNi, AgSno2, AgCdO, AgW, AgC etc 2) electrical contact sheet: button sheet, square sheet 3) silver wire and silver alloy wire used to making electrical contact. Founded in 1986, the company has nearly 20 years' experience in this field, which gives our products high and stable quality as well as competitive price. We want to establish long-term co-operation with your company. Please contact me for more information if you are interested in our products.