Condenser cleaning equipments with sponge rubber balls 凝汽器胶球清洗装置
2.
All sponge rubber packing for watertight doors need to be renewed 所有水密门的多孔橡皮密封垫换新。
3.
Specification for preformed open - cell sponge rubber pail and drum gaskets 预制开口泡沫橡胶桶和桶衬垫规范
4.
Standard specification for preformed sponge rubber cork and recycled pvc expansion joint fillers for concrete paving and structural construction 混凝土铺面和结构建筑用预制微孔橡胶软木和可回收的pvc膨胀接缝填料的标准规范
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