QuietTM Fire Door is of single, double and sliding types and products of standard and nonstandard sizes are available to meet the requirements of different sound insulation grades.
夸耶特TM隔音防火门有单开、双开、推拉等多种形式，提供标准及非标尺寸，不同隔音等级需求的产品。
QuietTM Fire Door is of single, double and sliding types and products of standard and nonstandard sizes are available to meet the requirements of different sound insulation grades.
夸耶特TM隔音防火门有单开、双开、推拉等多种形式，提供标准及非标尺寸，不同隔音等级需求的产品。
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