In the production process, the pursuit of quality and stability, all pure tin, lead materials are pure origin Yunnan, Guangxi direct purchase.

在生产过程中，为追求品质的稳定，所有纯锡、纯铅材料均由原产地云南、广西直接购进。

youdao

In the production process, the pursuit of quality and stability, all pure tin, lead materials are pure origin Yunnan, Guangxi direct purchase.

在生产过程中，为追求品质的稳定，所有纯锡、纯铅材料均由原产地云南、广西直接购进。

youdao