Z261 Z261 21D(黑镍) 21D(黑镍) W 28 Zinc alloy 锌合金 Zinc alloy 锌合金 128 160 171 H 0 31 31 27 128/160 171 30 28 30 19 Z261 Z261 14L(咖古) 14L(咖古) W 28 Zinc alloy 锌合金 Zinc alloy 锌合金 128 160 171 H 0 31 31 27 128/160 171 30 28 30