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2014年6月20日,北京园林科研院发布公告,秦皇岛松岩建材有限公司提供的“松岩”牌SY-115聚乙烯复合防水卷材(FS2型,1.2 mm厚)、北京瑞泰宏源建材有限公司(原北京宏盛源新型建材有限公司)提供的聚乙烯高分子增强(丙纶)防水卷材(FS2型,1.2 mm厚)、江苏欧西建材科技发展有限公司提供的阻根聚氯乙烯(PVC)防水卷材(W类,Ⅱ型,1.5mm厚)、北京中海防水建筑材料有限公司提供的种植屋面用耐根穿刺防水卷材(SBSⅡ型PY PE PE 4mm)、河南省华瑞防水防腐有限公司提供的种植屋面用耐根穿刺防水卷材(SBSⅡ型PY PE PE 4 mm)、
On June 20, 2014, Beijing Institute of Landscape Architecture announced that SY-115 polyethylene waterproofing membrane (type FS2, 1.2 mm thick) provided by Qinhuangdao Songyan Building Materials Co., Ltd., Polyethylene polymer reinforced (PP) waterproofing membrane (FS2 type, 1.2 mm thick) provided by Building Materials Co., Ltd. (former Beijing Hongshengyuan New Building Material Co., Ltd.), Root Resistant Polyvinyl Chloride (PVC) waterproofing membrane (W type, Ⅱ type, 1.5mm thick), Beijing Zhonghai Waterproof Building Materials Co., Ltd. to provide planting roof with punctate waterproofing membrane (SBS Ⅱ PY PE PE 4mm), Henan Huarui waterproof Anti-corrosion Co., Ltd. provided planting roof with anti-root puncture waterproofing membrane (SBS Ⅱ PY PE PE 4 mm),