SIGMA manufactures and exports the full range of geosynthetics — impermeable HDPE geomembrane liner, woven and nonwoven geotextiles, geocells, GCL, and drainage products — for containment, separation, lining and drainage projects. Built to GRI-GM13, ASTM and AASHTO standards, straight from our factory floor.
Ten product clusters under one roof — geomembrane, geotextile, geocell, GCL, gravel & grass grids, geobag/geotube, drainage, erosion control, protective and installation equipment.
HDPE geomembrane built to GRI-GM13; geotextiles to AASHTO M288; GCL to GRI-GCL3; drainage to ASTM D4716 — tested to the designated methods.
Our own production lines and in-house quality control mean consistent rolls and real capacity for bulk export orders — straight from the factory.
Experienced with FOB Qingdao/Ningbo/Shanghai, CIF on request, and full-container loads for overseas projects worldwide.
From impermeable HDPE liner to filtration geotextiles and subsurface drainage — explore the ten clusters we manufacture.
Factory direct. Our own production lines and quality control mean consistent rolls and real capacity for bulk export orders, with no middleman.
Full range + OEM. Multiple materials, thicknesses, widths and surfaces; custom size, color and private-label OEM/ODM for your project and brand.
Export-ready. Experienced with FOB Qingdao/Ningbo/Shanghai, CIF on request, full-container loads and overseas project requirements.
Sustainable. Durable polymer liners and drainage products engineered for a long service life — a cost-effective, lasting alternative to clay and concrete.
Popular installation guides, material comparisons, standards and price guides from the SIGMA Geosynthetics team.
Comparison Not every non woven geo fabric is made the same way. Needle punched, spunbond and thermally bonded nonwoven geotextiles use different fiber-bonding processes, and the process decides strength, flow rate and cost. Here's how to pick the right one.
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Guide How to pick geotextile weight in GSM or oz/yd² for separation, filtration and drainage jobs — what the number actually tells you, when 4 oz is enough and when it isn't, and woven vs nonwoven for each use.
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Guide How to install a root barrier that actually stops roots: trench depth, HDPE panel thickness, joining panels without gaps, and backfill. Covers tree root barriers near foundations and bamboo rhizome barriers for full containment.
Read guideTell us the product, thickness, area or quantity, and destination port — we reply within one business day with pricing and a datasheet.
We manufacture the full range of geosynthetics: HDPE, LLDPE, LDPE, PVC, textured and composite geomembrane; woven and nonwoven geotextiles; HDPE geocell and gravel grid; geosynthetic clay liner (GCL); geobag and geotube; drainage products (geonet, dimpled drainage sheet, wick drain/PVD, corrugated and permeable pipe, rainwater storage module); erosion-control products (3D geomat, concrete blanket, silt fence, turbidity curtain); and installation equipment such as geomembrane welding machines.
Our HDPE geomembrane liner is produced to GRI-GM13; geotextiles and silt fence to AASHTO M288; geosynthetic clay liner to GRI-GCL3; drainage geocomposites to ASTM D4716; corrugated drainage pipe to AASHTO M294; and concrete blanket to ASTM D8364. Values are tested by the designated ASTM/AASHTO methods, and certificate copies (ISO 9001, CE) are available on request.
Yes. As a manufacturer we supply custom thicknesses, widths, surfaces (smooth or textured) and colors, and offer OEM/ODM — including private-label packaging — to meet your project specification and brand.
Tell us the product, thickness, total area or quantity, and destination port. We quote ex-works, FOB (Qingdao/Ningbo/Shanghai) or CIF on request, ship in full-container loads, and reply within one business day with pricing and a datasheet.
