The natural exhaust system in screw type dryer often resulted in higher and fluctuated moisture content in dried scraps, therefore it was replaced by a mechanical exhaust system.

螺旋式碎片干燥设备的排潮系统由于设计分歧理，常常造成干燥后碎片含水率偏高且不稳定，为此对其排潮系统进行了改良。

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Additionally, system solutions for natural smoke and heat exhaust ventilators (NRWG) were tested according to EN 12101-2 for turn-tilt and bottom hung windows.

除此之外，根据有关“内开内倒窗和下悬窗”的EN 12101-2标准，也对自然排烟和排热通风装置（NRWG）的系统解决方案进行了测试。

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