所用的每一块板材都要经过采购及质检的严格把关，保证无污渍、无锈斑，无伤痕，合格后才能进入生产工序，从源头确保产品质量。

After strict check, each plate with no stains, no rust, and no scratches can be entered into production process, so as to ensure product quality from the very beginning.

youdao

轴与外壳的检验清洗轴与外壳，确信无伤痕或无机械加工留下的毛刺。

2 axis and shell inspection cleaning shaft and shell, no scars or no mechanical processing of the burr.

youdao