How about production process for rugged pda ?

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What is the difference between a stacked filter and a mesh filter? The purpose of the net filter is mainly used for irrigation with good water quality or in combination with other forms of filters when the water quality is poor, as the last stage filter equipment. The stacked filter flow enters the filter through the filter inlet, the filter stack is tightly pressed together under the action of spring force and hydraulic power when filtering the stack, and the impurity particles are trapped at the intersection of the stack, the filtered water flows out of the main channel of the filter, at which point the one-way diaphragm valve is on. Both of them are filters, but because the design is completely different, there is overlap and difference in the use of the scene. for example, the pressure of the stacked filter is not high. The stacked filter can be backwashed without interruption, the filtering accuracy of the stacked filter is higher, and the water quantity of the stacked filter is not large.

How many grades are Hankerson precision filters divided? 10 Hankerson filter grade description:HF9 oil and water separation filter:1) filter out a large number of liquids with a processing accuracy of 3 microns;2) 5ppm of the maximum residual oil contentHF7 oil and water separation filter:1) remove liquid water and oil with a processing accuracy of 3 microns;2) maximum residual oil content 1. 0ppmHF5 micro oil mist filter:1) gathering small water vapor and oil mist, the processing accuracy is 0.01 microns; 2) the maximum residual oil content is 0. 01ppmHF3 super oil mist filter:1) gathering small water vapor and oil mist, the processing accuracy is 0.01 microns; 2) the maximum residual oil content is 0. 001ppmHF1 oil steam filter:1) remove oil steam and hydrocarbon steam with a processing accuracy of 0.01 microns; 2) maximum residual oil content of 0. 003ppm