Safety the highly effective convenience drainage system may prevent the valley between roofs and the down-flow pipe damage guaranteed the roof does not tie the snow and ice the icicle.
安全，高效便利的排水系统可以防止屋顶天沟及下水管的损坏，保证屋顶不结冰雪、冰柱。
Safety the highly effective convenience drainage system may prevent the valley between roofs and the down - flow pipe damage guaranteed the roof does not tie the snow and ice the icicle.
安全，高效便利的排水系统可以防止屋顶天沟及下水管的损坏，保证屋顶不结冰雪、冰柱。
Safety the highly effective convenience drainage system may prevent the valley between roofs and the down - flow pipe damage guaranteed the roof does not tie the snow and ice the icicle.
安全，高效便利的排水系统可以防止屋顶天沟及下水管的损坏，保证屋顶不结冰雪、冰柱。
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