The main production: solid oil switch contact, solid self - contact and alloy material for contact.

主要产品油开关整体触头 、 自力型整体触头及触头用合金材料.

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Suspended solid , oil cut and produced polymer increased the AP - P 4's adsorption capacity on sandstone.

悬浮物 、 含油率和残留聚合物使AP-P4在砂岩上的吸附滞留量增大.

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