Formwork, Scaffolding manufacturer / supplier in China, offering Waterproof Yellow Painted H20 Concrete Formwork Beam H20 Beams 3.9m Length, Doka H20 Beam Spruce Wooden H20 Timber Beams for Concrete Formwork Construction, Slab Formwork Timber Beam H20 Timber Beam for for Concrete Formwork Construction and so on.