Abstract: An engineering-purpose netted vegetation blanket including a plurality of mesh units arrayed and interwoven into rows. The mesh units each have borders loop-knitted using threads to form a double-layer structure including an upper and a lower thread layer, and a plurality of curved threads that are so woven to locate between the upper and the lower thread layer and be sequentially arrayed and extended between two adjacent ones of the borders while protruding from a plane defined by the borders. The mesh units are so arrayed that the mesh units in any two adjacent rows are in staggered relation, such that a void is formed between any two adjacent mesh units.

Abstract: A 3-layer venting mattress structure comprised of a steel fiber layer sandwiched by net layers sewn on its periphery. Both upper and lower net layers are made of fiber or non-woven with interlaced mesh for venting purposes. The steel layer between the fiber layers is made of high-strength steel yarn lop-sided woven in a spiral and continuous fashion to provide a mattress that allows excellent air permeability and tensile strength with sufficient capability to withstand local area loads. Therefore, the present invention solves the poor ventilation problem of the prior art, achieves the evenly distributed load susceptibility of the mattress, and provides an innovative type of space arrangement.