One geosynthetics manufacturer for the whole project
SIGMA produces geomembranes, geotextiles, geocells, geogrids, GCL and drainage products in-house — so you can source a complete, consistent geosynthetics package from a single ISO 9001-certified factory, backed by export handling and engineering support.
The full range, made under one roof
SIGMA is a geosynthetics factory, not a trading desk. Production runs across our own modern workshops with dedicated geomembrane, engineering-fibre, geocell and geotextile production lines — covering geomembranes, geotextiles, geocells, geogrids, GCL, drainage and erosion-control materials.
Because the whole range is made in-house, you specify a complete lining, reinforcement and drainage package and we fill it at container scale, on schedule, with consistent quality across every roll. One-stop sourcing means fewer suppliers, matching materials and a single point of accountability.
Tested in-house, verified abroad
SIGMA operates a national-standard laboratory for in-house quality control, with a strict system covering virgin resin melt-flow index (MFI) and carbon-black dispersion testing, online thickness monitoring, and finished-roll testing under GRI-GM13, ASTM D6693, ASTM D5397 (NCTL) and ASTM D4716. The management system is certified to ISO 9001 and our products carry CE marking (EN 13249–13257 / EN 13361).
Every shipment includes a batch-traceable Mill Test Certificate (MTR) matched to roll serial numbers. Beyond internal control, we support third-party inspection and testing by SGS, BV, Intertek and accredited laboratories in Europe and the United States so buyers and CQA engineers can verify compliance with confidence.
Set up for export, end to end
As a geosynthetics manufacturer our products have shipped to more than 60 countries. We handle export from the factory out: FOB Qingdao / Ningbo / Shanghai or CIF to your port, full-container loads and LCL, with the documentation overseas buyers need. OEM / ODM supply lets you order to your own specification — material grade, thickness, width, surface and packaging — and we develop products for specific project, hydraulic or subgrade requirements.
More than material supply
Beyond supplying material we offer technical service and engineering consulting for reinforcement, lining and containment applications, and back it with one-stop project support from design and supply through installation, CQA and maintenance. Tell us the application and we help you select and size the right system.
Production, testing and dispatch — on video
Real footage from our own workshops: HDPE and composite geomembrane production, in-house tensile and QC testing, and the finished-goods warehouse that fills container-scale export orders.
Why choose SIGMA
- In-house production of the full geosynthetics range — one supplier, one set of paperwork.
- ISO 9001 certified management system and CE-marked products.
- National-standard laboratory controlling quality from raw material to finished roll.
- Exported to more than 60 countries, with the documentation overseas buyers need.
- FOB Qingdao / Ningbo / Shanghai or CIF, full-container and LCL shipping.
- OEM / ODM supply to your specification — grade, thickness, width, surface and packaging.
- Engineering and selection support for lining, reinforcement and drainage applications.
- Factory-direct pricing and English-speaking support that replies within one business day.
Ready for a factory-direct quote?
Tell us the product, thickness or grade, quantity and destination port — as the manufacturer we reply within one business day.
Request a Quote