THE outlook for ethylene spot market availability remains muddled as a few weeks ago due to higher freight rates and uncertainties surrounding Middle East natural-gas feedstock supply.

由于运费上涨，及中东天然气供应的不确定性，乙烯现货市场的供应前景与前几周相比仍然充满了不确定性。

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Ahead of Oct. 26 launch, Microsoft outlines pricing, market availability and special limited quantity pre-order.

ENGADGET: Microsoft Surface for Windows RT pricing now official: tablet starts at $499, keyboard not included

Market availability will vary by country and operator, with broad availability in coming weeks, the company added.

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In addition to pricing and market availability, the company announced a special limited-quantity pre-order for Surface with Windows RT available 9 a.m.

ENGADGET: Microsoft Surface for Windows RT pricing now official: tablet starts at $499, keyboard not included