- Pictures of Needle-punched nonwoven filament geotextile

- Geotextile
Geotextiles are permeable fabrics which, when used in association with soil, have the ability to separate, filter, reinforce,

protect or drain. As the use of geotextile fabrics has expanded there has been the introduction of geotextile composites

and the development of products such as geogridsand meshes. Overall these materials are referred to as geotextiles and

related products. All have a wide range of applications and are currently used to advantage in many civil engineering

applications including roads, airfields, railroads, embankments, retaining structures, reservoirs, canals, dams, bank protection

and coastal engineering.

- Isolation
The use of geotextile different physical properties (particle size, distribution, density and thickness, etc.)  materials (such as soil

and sand, sand and gravel soil, soil and concrete, etc.) for isolation. So that two or more materials are not loss of inter-and non hybrid, 

to maintain the  overall structure of the material  and functions of the structures is to strengthen the  load bearing capacity.
- Filter
When the water from fine materials into the soil layers of rough material, the use of acupuncture geogextile  good air and water permeability,

so that the water flow through, and effective interception soil particles, spinning, the small stone so as to maintain the stability of the soil and water projects.
- Drainage
Acupuncture geotextile is a good hydraulic material, which can from a soil internal drainage channel, soil structure and excess liquid gas emissions.
- Reinforced
Acupuncture use of geotextile to enhance soil and the tensile strength of the anti-deformation ability to increase the stability of the building

structure in order to improve the quality of the soil.
- Protection
Will focus on effective stress-proliferation, transfer or broken down by external force to prevent the soil and damage.
- Closed
Acupuncture geotextile and other materials (primarily asphalt or plastic film) with the formation of impermeable layer of insulation layer.

(Mainly used for road resurfacing and repairing, etc.)