Rubber building gaskets - materials for preformed solid vulcanized structural gaskets - specification 建筑橡胶密封垫?预成型实心硫化的结构密封垫用材料规范
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Building gaskets and building structural gaskets - materials in preformed solid vulcanizates used for sealing glazing and panels 建筑衬垫和建筑结构衬垫.门窗玻璃安装和嵌板密封用预成形固态硫化橡胶材料