IMPRO Metal Metalurji Dokum Ltd. Sti., that produces copper and copper alloys in Gebze, prefers spectrometer saler Dokum Makina Muhendislik ve Pazarlama Ltd. Sti. with 34 years after sales experience. Installation and training is also given for Bruker Elemental Q4 Tasman 130 CCD Spectral Analyze Instrument.