We operate under a clear principle: quality must exist in every stage of our value chain.
From raw‑material sourcing and formulation to process engineering and finished‑product verification, LANDU's integrated quality management system safeguards performance, purity, and reliability.
More than procedures, this philosophy has created a company‑wide culture of quality consciousness. Every team member—from production technicians to senior executives—shares the responsibility of ensuring that LANDU products consistently exceed our customers' expectations.
The strategic integration of ZOVAE, a well‑known Chinese manufacturer of Redispersible Polymer Powder (RDP) and specialty additives, amplified this philosophy. Together, we leverage joint R&D and technology to enhance production efficiency and set new benchmarks for cellulose ether, RDP, and advanced additive quality across all LANDU facilities.
Quality begins long before production starts.
LANDU collaborates exclusively with certified, audited suppliers—including leading international partners such as Celanese and Sinopec—to ensure every raw material meets our strict specifications for purity, safety, and sustainability.
Each incoming batch receives a unique digital ID in our traceability system.
This barcode‑based tracking follows the material through storage, reaction, blending, and packaging, creating transparent records that simplify auditing and guarantee full accountability.
All raw materials undergo multi‑parameter analytical testing before release to production.
Only materials that meet predefined standards of moisture, viscosity, reactivity, and visual quality are approved—preventing non‑conforming inputs from ever entering the process line.
Our high‑capacity plants represent LANDU's commitment to stability and scale: 15,000 m² of modern warehousing and an annual capacity exceeding 75,000 tons ensure consistent quality and reliable delivery.
Guarantee more complete reactions and consistent molecular substitution compared with conventional horizontal designs.
Air‑stirred technology promotes homogeneous blending and minimizes mechanical stress, improving batch stability and uniformity.
Assures every bag or pallet maintains consistent viscosity and performance.
A digital production environment minimizing manual operation and human deviation.
LANDU's production runs are governed by automated control systems engineered for repeatability and precision.
Real‑time monitoring of temperature, pH, reaction time, and viscosity with automatic adjustments to maintain optimal conditions.
Automated adjustments cut human error, providing exceptional consistency between lots.
Continuous parameter logging enables statistical analysis and predictive correction—ensuring strict compliance with internal tolerances and global standards.
Through these digital systems, every ton of LANDU cellulose ether and polymer additive delivers identical quality, verified scientifically.
Every finished batch undergoes functional testing that includes:
LANDU maintains full compliance with international quality and environmental frameworks:
Quality Management
Environmental Management
Chemical Safety Certification
Beyond production checks, our quality team provides technical support, formulation troubleshooting, and result interpretation to ensure every product performs flawlessly in its final application.
At LANDU, we are devoted to refining our materials, upgrading our systems, and strengthening every link between research, production, and service.
By combining technology, discipline, and accountability, we guarantee that every shipment represents the very best of what LANDU stands for: