interphone

This unit is widely used by Russian military, policemen and railway workers, all 28 parts were made by Kenvox, including plastic, die-casting aluminum, stamping metal, rubber, silicon, PCB, sponge etc. Most of parts are very small with top precise dimension requirements (below +0, -0.05mm), and slight tolerance deviation or burs may affect the assembly, especially that aluminum alloy chassis with is not easy to control and process, it need drill over 12 holes and screw thread, any small problem with any of these 12 holes will cause the rejection of this whole part.