Profile: Farwest-special Products Div. serves construction and slope stabilization, ground water monitoring, drilling & water well development, mining & mineral exploration, landfills and fishing industries. Our product line includes Tigre Tierra ® casing drivers, hydrophilic PVC well screen & casing, Tigre Tierra ® cable tool casing drivers, Tigre Tierra ® packers & wireline systems and centralizers. Our PVC screen is used for groundwater monitoring, leak detection and sub-surface horizontal drainage systems.