... ,quickly mating Structure characteristic1. This series is equivalent to MD series of America.2. This series’ core has specifications of 9, 11, 15, 17, 21 ... locking component:Used for fixed terminal products, it has types of P, P0, P1, P2, P3, P4, P5, P7, P8, P9, P10 ... component-type L, K, K1; fixed terminal locking components-type P, P0, P1, P2, P3, P4, P5, P7, P8, P9, P10 ...