Surface processing: plate the zinc (blue zinc, yellow zinc and plate the zinc up the wax) and plate the Ni, point phosphate to turn black.

表面处理：镀锌(蓝锌、黄锌及镀锌上蜡)、镀镍、磷化黑。

youdao

Surface processing: plate the zinc (blue zinc, yellow zinc and plate the zinc up the wax) and plate the Ni, point phosphate to turn black.

表面处理：镀锌(蓝锌、黄锌及镀锌上蜡)、镀镍、磷化黑。

youdao