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In this paper, we study the integrability and linearization of a class ofquadratic quasi-analytic switching systems. We improve an existing method tocompute the focus values and periodic constants of quasi-analytic switchingsystems. In particular, with our method, we demonstrate that the dynamicalbehaviors of quasi-analytic switching systems are more complex than that ofcontinuous quasi-analytic systems, by showing the existence of six and sevenlimit cycles in the neighborhood of the origin and infinity, respectively, in aquadratic quasi-analytic switching system. Moreover, explicit conditions areobtained for classifying the centers and isochronous centers of the system.

Center and isochronous center of a class of quasi-analytic switching systems