强劲的硬齿面动力传动系统，经久耐用且保证了稳定的挤出量和优异的产品质量。

Strong and durable hard-surface drive system makes sure the stable output and good quality.

youdao

强劲的硬齿面动力传动系统，经久耐用且保证了稳定的挤出量和优异的产品质量。

Strong and durable hard-surface drive system makes sure the stable output and good quality.

youdao