Due to their slanted position and the air cushion in between the ribs are optimally adjusted to the acoustic behaviour of the poloplast above ground drainage systems polo-kal ng and polo-kal3s.

由于这些肋条是倾斜状态，中间还有气垫，使其能优化调节poloplast的polo-kalng和polo-kal3s系列地上排水系统的声学特性。

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Other large gold investors include Tom Kaplan, who owns a major position in Novagold(NG), a Canadian company, Frank Giustra, a Canadian mining entrepreneur, The University of Texas pension fund and many others such as US Global Investors, a mutual fund company in San Antonio, Texas.

FORBES: Soros Reported To Have Sold Gold Position in April