One-time die casting mold, the weight error is small, high efficiency.

模具一次性压铸成形，重量误差小，生产效率高。

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In 2003, the issue of passenger weight surfaced when a commuter plane crashed on takeoff from Charlotte, North Carolina, because of excess weight and a maintenance error.

CNN: Airline policies juggle larger passengers

First, weight loss is often an uphill metabolic battle for many, with very little margin for error in achieving that appropriate 1-2 pound per week goal you mention.

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