Precise tolerance of concentricity for ceramic plunger, not only increase the abrasion-resistance of plunger but also increase seals life.

精密陶瓷柱塞同心度的宽容，试压泵不仅增加了柱塞磨损性，空调泵而且提高密封寿命。

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Professional processing make the surface finish of the product to above 1.6, the tolerance is within 0.02mm, concentricity is 0.005mm.

专业的加工使产品表面光洁度可达到1.6以上，尺寸精度可保证在0.02 mm以内，同心度0.005 mm。

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