Therefore, keeping clean in workshop and regulating the metal constitution of rolling machine could reduce the Pb and Cu pollution during tea processing.

因此，保持加工场所的清洁卫生和调整揉捻机揉筒和揉盘的金属组成是降低茶叶加工过程中铅和铜污染的有效途径。

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The machine manufacture factory is founded in 1993, processing workshop now has 20 CNC auto control lathes. We have abundant experience in precisely manufacture model, metal goods and plastic goods.

机械制造及加工工厂成立于1993年，加工车间现配备20台CNC精密加工数控车床，对精密模具、金属件、塑料件的精密加工有丰富的经验；

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