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Geophone String:
This geophone string can adopt four various kinds of chips xn, xd, dpn, xpd, choose the amphibious protection housing with two wire terminlas, waterproof cable, applicable in the construction request of the land, desert, shallow water district and other complicated earth's surface conditions. The products have tight waterproof and small size, light weight, with strong operability, operation ambient temerature is -40 to 70 degree centigrade.
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