99热都是精品久久久久久久

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        1. 商用熱水
          Commercial hot water
          商用采暖
          Commercial heating
          集中采暖
          Centralized heating
          泳池恒溫
          Swimming pool
          農業烘干
          Agricultural drying
          工業烘干
          Industrial drying
          養殖恒溫
          Constant temperature culture
          熱水BOT
          Hot water BOT
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