Dear sir， This is David from Beijing Guance Precision electric company.Our company focuses on the R & D of electrical performance measuring instruments for materials.Resistivity meter Specialized in the design, development and sales of Electrical Meter measuring auto resistivity instrument. Our Main products as follows: Electrical resistivity tester/ electrical measuring auto resistivity instrument Dielectric constant tester Dielectric strength measuring instruments Electrical precision measuring instruments Volume resistivity measuring instruments Full automatic resistivity measuring instruments Semiconductor resistivity measuring instruments Wire and cable resistivity measuring instruments Metal wire resistivity measuring instruments Cable insulation resistivity measuring instruments Powder meterial resistivity measuring instruments High temperature resistivity measuring instruments Other Resistivity measuring instruments products. Our Company has a team of well qualified Engineers, Technicans & Professors who are constantly engaged in precision instruments Production , Designing and Development. May i know if you deal wiht these products? I believe Our products will make you 100% satisfy! Thanks David Beijing Guance Precision electric company