Four-column hydraulic press filter is broken which is right, buy?

Four-column hydraulic press filter is broken which is right, buy? Now say first in four column hydraulic press is commonly used in what kind of oil filter are there? Its characteristics and use?

In four column hydraulic press is commonly used in the oil filter net type oil filter, line spacing type oil filter, metal sintering type chip oil filter and oil filter, oil filter paper five kinds: the role of and characteristic introduction is as follows:

(1) electronic filter chip of oil filter filter is commonly used copper composite Oil filter precision depends on the size of the copper clearance, its value is commonly 0. 12 ~ 0 * 2 TNM. Fine filtration in the () * 08 m. ni, oil can be greater than 0, 05 ~ 0, 1 mm mechanical miscellaneous quality, and the particle filter is characterized by high strength, not easy to damage, small size and large oil capacity s point is the deficiency of copper material expensive. Not easy to manufacture, and