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.
Guide Why a French drain's perforated pipe gets wrapped in a nonwoven geotextile filter, when you still need gravel, when you don't, and how to install a French drain that doesn't silt up in two seasons.
Read guide
Guide How geocell (cellular confinement) stabilizes a soft road base, holds fill on a slope and turns a parking area into grass pavers — what it does, where it fails, and the install details that decide it.
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Standards How a geotextile spec ties tensile strength, CBR puncture, sampling and acceptance to ASTM and GRI test methods — and how to read a test report so the delivered fabric actually matches the spec.
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.
