... in highways, railways, protecting hillside, hillside greening, well and alley fence, building and breeding, zoo fence, greening fence, hillside net cage ... of the bridge, solid structures defense project, retaining wall, and port project, etc.Material DeliverySack Gabions are manufactured with all ... , the oversize rock shall not be larger than 250 mm, and the undersize rock shall not be smaller than 80 ...