Especially, the aluminum doors, windows and curtain walls have the first level certificate of quality and first level design certificate approved by China construction administration.
尤其是铝合金门窗幕墙部分具有中国建设部颁发的装饰装修一级资质证书、甲级设计证书。
Beijing PH company belongs to Windows and doors equipment manufacturing industry. This company is specialized in designing and manufacturing aluminum Windows, doors and curtain walls equipment.
北京PH公司属于门窗装备制造行业，是专业生产铝合金门窗及幕墙加工机械的厂家。
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