kt12-kcv50n-16.800m-t,kt12-kcv50n-19.200m-t,kt12-kcv50n-19.680m-t,kt12-kcv50v-12.800m-t,kt12-kcv50v-13.000m-t,kt12-kcv50v-14.400m-t国内货源