两棵树物业管理(北京)有限公司，是伴随着颇具北美风情的全木结构别墅小区(美制洋楼)北京波特兰花园应运而生。
Double Tree Property Management (Beijing) co., Ltd was founded accompanied by the Beijing Portland Garden which owns timber frame villas complexes (modern American timber-framed structures).
三屋楼梯包括全实木结构楼梯、水泥基础实木楼梯和钢木楼梯等。
Saintwood wood stairs include complete wood stairs and wood stairs with cement bases.
深度炭化防腐木源自欧洲，有十年的使用记录。著名的里昂歌剧院就在1997年采用了全炭化防腐木结构。
Second-ranking carbonization depth anticorrosive wood from Europe, ten years of service records. The famous opera house in Lyon in 1997 by the whole carbonization corrosion timberwork.
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