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BTM－PVC异型材除了具有普通PVC异型材的一切优点外，而且表面光洁并附有漂亮暗纹，具有一定韧性，手感舒适，豪华美观，是一种高档的室内装演材料。1996年中船总第716研究所开展科技攻关，在连云港市东航公司的配合下，BTM－PVC楼梯扶手目前已投入使用。本文介绍BTM－PVC楼梯
In addition to all the advantages of ordinary PVC profile, BTM-PVC profiled material has a smooth surface with beautiful dark lines, a certain toughness, comfortable feel and luxurious appearance. It is a high-grade indoor performance material. In 1996, the 716th Institute of China Shipbuilding carried out scientific and technological research. With the cooperation of Donghang Company of Lianyungang City, the BTM-PVC staircase handrail has been put into use. This article describes the BTM-PVC staircase