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The KLL dielectronic recombination processes of highly charged He-like to C-like Kr ions have been studied experimentally. The measurement was performed on the newly developed Shanghai electron beam ion trap (Shanghai-EBIT) facility.Characteristic x-rays from both dielectronic recombination and radiative recombination are detected as the electron beam energy is scanned through the resonances.The KLL resonant strengths obtained are 5.41×10-19,4.33×10-19,3.59 x 10-19,2.05×10-19 and 0.98 × 10-19 cm2 eV for He-like to C-like Kr ions,respectively.