Polyurethane sealing paste is used for caulking to ensure the overall waterproof and insulation of the roofing works.

聚氨酯密封膏填嵌，确保了屋面工程的整体防水和保温功能。

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Polyurethane sealing paste is used for caulking to ensure the overall waterproof and insulation of the roofing works.

聚氨酯密封膏填嵌，确保了屋面工程的整体防水和保温功能。

youdao