Stable, safe, and contamination-free packaging and storage are essential to preserving the performance of all powder-coating raw materials. At PCOTEC, packaging and warehousing are treated as core components of our quality assurance system. From production to delivery, every step follows strict standards designed to maintain stability, purity, and safety.

1. Packaging Materials Designed for Protection

We use industrial-grade, moisture-resistant packaging tailored to each product category, including polyester resins, curing agents, additives, and fillers.
Common materials include heavy-duty fiber drums, multilayer PE/PP liners, moisture-proof sealed bags, and reinforced pallets.
These materials prevent moisture absorption, contamination, caking, and physical damage during transport and storage.

2. Standardized Packaging Procedures

To guarantee consistency and safety, each batch follows a defined packaging SOP:

• Inner liners are tightly sealed to block air and moisture.

• Drum lids are inspected for locking strength and deformation.

• Labels include product name, batch number, production date, and storage instructions.

• All items are palletized and stored off the ground.

• Final visual inspection ensures the packaging meets shipment standards.

3. Packaging Reliability Testing

Multiple tests are conducted to confirm packaging durability:

• Drop tests to simulate accidental handling

• Compression tests for stacking load resistance

• Seal-integrity verification for airtight protection

• Vibration / transport simulation when required
  These evaluations ensure materials remain stable during long-distance logistics.

4. Scientifically Controlled Storage Environment

PCOTEC warehouses apply strict environmental control:

• Temperature & humidity: kept cool, dry, and well-ventilated to avoid caking, aging, or degradation.

• Safety rules: no open flames or heat sources; smoking prohibited.

• Cleanliness: dust-prevention and regular maintenance.

• Sunlight protection: all products are stored away from direct UV exposure.

5. Professional Warehouse Zoning & Inventory Management

Warehouses are divided into:

• Raw material zone

• Finished goods zone

• Quarantine zone for non-conforming batches

• Rework / review zone

Materials follow FIFO management, ensuring all products remain within valid storage periods and maintain stable quality.

6. Safe Stacking & Handling Standards

To avoid deformation or contamination:

• Drums are stacked following “large bottom, small top; heavy bottom, light top.”

• All packages stay upright and palletized.

• Forklifts operate within designated lanes to prevent impact damage.

7. Storage Period & Quality Guarantee

Products carry a 12-month warranty under sealed, dry storage conditions.
If quality issues arise within this period due to PCOTEC production, replacement or corrective support is provided.

Conclusion

PCOTEC ensures reliable product performance through:

• optimized packaging materials,

• standardized packaging operations,

• validated protective testing,

• controlled warehousing, and

• disciplined inventory management.

Our goal is simple: to deliver stable, safe, and high-quality raw materials—every batch, every shipment.

At PCOTEC, delivering high-quality raw materials is only the beginning. Equally important is the assurance that every customer receives long-term technical support, transparent communication, and timely problem-solving throughout the entire cooperation cycle. Our after-sales service system is built on professionalism, responsiveness, and accountability—ensuring that every batch we ship continues to perform reliably in our customers’ production environments.

1. Comprehensive Technical Support

We provide a full range of technical services for all resin, curing agent, additive, and filler products. Customers receive complete documentation including the Certificate of Analysis (COA) and Material Safety Data Sheet (MSDS), ensuring traceability and safe handling.
Our technical team supports customers with usage guidance, application recommendations, formulation suggestions, and real-time answers to production-related questions.

2. Quality Assurance & Warranty Commitments

All products are covered under a 12-month quality guarantee when stored under dry and sealed conditions.
If any material is proven defective due to our production process (rather than improper storage or usage), PCOTEC will take full responsibility and provide replacement or corrective solutions.
Upon request, customers may also receive sample testing services for verification or comparison.

3. Efficient Customer Communication

Customer satisfaction is central to our service philosophy. We maintain open communication through phone, email, and designated service channels.
Each inquiry or issue is recorded in our service system, including customer details, product batch information, and a description of the situation.
Within 24 hours, our team will formally acknowledge receipt and begin internal coordination to analyze the case.

4. Transparent Complaint-Handling Procedure

PCOTEC follows a structured and disciplined process based on the principles of “Fast Response, Thorough Investigation, Effective Correction, and Customer Satisfaction.”

Step 1 — Complaint Receipt & Documentation

Service staff registers all necessary information and confirms details with the customer.

Step 2 — Initial Feedback & On-site Support

Customers receive feedback within 24 hours. If necessary, our team can visit the production site to collect samples or observe application conditions.

Step 3 — Root-Cause Analysis

Quality, technical, and production teams jointly review manufacturing records, QC results, raw-material data, and logistics history.
We determine whether the issue originates from raw-material quality, processing conditions, transportation, or storage.

Step 4 — Corrective Actions

Depending on the findings, corrective plans may include product replacement, technical adjustment, cost-compensation solutions, or application-process improvements.
We follow up on the correction results to ensure the issue is fully resolved.

Step 5 — Optimization & Prevention

All cases are summarized and reviewed by relevant departments to identify systemic improvements and prevent recurrence.

5. Continuous Improvement & Customer Focus

Beyond resolving issues, PCOTEC’s goal is long-term reliability.
Customer feedback is integrated into our R&D, production, and QC systems, forming a closed-loop improvement mechanism that strengthens quality control and enhances the performance of future batches.

We aim not only to solve problems quickly, but also to help our customers optimize production efficiency, improve coating results, and increase overall competitiveness.

Conclusion

PCOTEC's after-sales service system is more than a support function—it is a strategic commitment to ensuring our customers’ success. With timely communication, strict quality assurance, and a scientific complaint-handling process, we deliver peace of mind long after the product has left our factory.
Our mission is to build long-term partnerships grounded in trust, technical expertise, and consistent performance.

In the powder-coating raw material industry, reliability is built on one foundation—testing. Every batch of resin, curing agent, additive, and filler must deliver predictable performance in extrusion, curing, film formation, and long-term durability. At PCOTEC, we have developed a rigorous testing system that combines scientific methodology, advanced equipment, and strict process discipline to ensure every product meets the highest industry standards. This article provides an inside look into how our testing standards safeguard quality and consistency for global customers.

1. A Structured Quality-Control Organization

PCOTEC’s QC department operates under a clearly defined structure that includes quality engineers, laboratory chemists, inspection specialists, and authorized release personnel. Each team member undergoes systematic training and must comply with strict SOPs (Standard Operating Procedures) to ensure all testing activities are executed accurately and traceably.
Our team is experienced in analytical chemistry, polymer science, and powder-coating performance evaluation, enabling us to perform both routine inspections and advanced technical assessments.

2. Full-Process Testing Workflow

Every batch follows a closed-loop QC workflow:
Raw material intake → Sampling → SOP-based testing → Data recording → Report generation → Compliance decision → Release or quarantine.

This workflow ensures that no product enters production or leaves the factory without meeting PCOTEC’s internal standards, which are more stringent than conventional industry norms. Reports include batch number, sampling details, test methods, results, requirements, and formal approval signatures.

3. Comprehensive Testing for Key Raw Material Categories

Different raw materials require different technical evaluations. PCOTEC applies tailored testing standards based on their functional roles in powder coatings.

Polyester Resins

Testing includes acid value, viscosity, color, moisture content, gel time, and solid content. These parameters ensure predictable reaction behavior during extrusion and consistent curing with TGIC or HAA systems.

TGIC and Other Curing Agents

Key indicators include epoxy equivalent, hydrolyzed chlorine content, melting point, color, volatiles, and purity. Controlling hydrolyzed chlorine is particularly critical for minimizing film defects and ensuring stable crosslinking.

Additives

Leveling agents, matting agents, accelerators, degassing agents, wax powders, and surface modifiers undergo compatibility testing, appearance evaluation, and melt-flow stability checks to verify their effectiveness across different resin systems.

Fillers

Titanium dioxide, barium sulfate, calcium carbonate, and silica are inspected for particle size distribution, whiteness, impurity levels, and moisture content to ensure consistent film appearance and mechanical strength.

4. In-Process Testing During Production

Testing does not stop after raw materials enter the factory. PCOTEC conducts additional inspections during production to prevent fluctuations and ensure adherence to specification windows.

• Esterification monitoring (for polyester resins)

• Reaction completeness checks (for TGIC)

• Temperature and pressure curve verification

• Moisture and impurity control during washing and filtration

• Homogeneity checks before dilution and packaging

These controls ensure that each process stage remains fully stable and traceable.

5. Finished-Product Testing Before Shipment

Before products are released, PCOTEC performs a final inspection based on internal standards and the customer’s technical requirements. This includes:

• Label and packaging verification

• Batch integrity verification (weight, quantity, packaging condition)

• Chemical and physical property checks

• Document review (COA, MSDS, test reports)

Only products with a green “Approved” label can be released for shipping, ensuring trust and reliability for every customer order.

6. Handling of Non-Conforming Products

PCOTEC maintains a strict process for isolating and handling non-conforming materials. Any deviation triggers an investigation across production, quality, and technical teams.
Products may undergo rework, downgraded usage, or disposal depending on severity. Root-cause analysis is performed to generate corrective and preventive measures, reinforcing continuous improvement across all departments.

7. Why Our Testing Standards Matter

In powder coating, small variations in raw materials can lead to major differences in flow, leveling, gloss, curing behavior, and durability. PCOTEC’s testing standards ensure:

• Consistent batch-to-batch performance

• Reliable curing and crosslinking

• Stable film formation and appearance

• Reduced risk of defects in customer production

• Full traceability and technical accountability

Through scientific testing, disciplined methodology, and advanced laboratory practices, PCOTEC provides customers with raw materials that are stable, dependable, and ready for high-performance applications.

Conclusion

Testing is more than a production requirement at PCOTEC—it is a culture. Our commitment to strict testing standards, professional QC procedures, and transparent reporting strengthens every part of the value chain. With a full range of analytical capabilities and reliable quality-control systems, we ensure our customers receive materials that perform consistently and support long-term success in powder coating applications.

As powder-coating technology continues to evolve, the stability and consistency of raw materials have become essential to achieving reliable performance on the production line. At PCOTEC, our manufacturing system is built on digital automation, precision dosing, and strict batch-control standards, enabling us to deliver materials that meet the demanding requirements of modern coating formulations. This article offers an inside look at how our production system operates—from reaction control to traceability—and why it allows us to support customers with dependable, high-performance solutions.

1. Intelligent Manufacturing & Automated Reaction Control

PCOTEC’s core production processes are built on DCS (Distributed Control System) and PLC (Programmable Logic Control) automation.
The DCS platform manages key operations such as polyester esterification and TGIC addition/closure reactions. Operators can monitor and adjust temperatures, pressures, levels, and agitation speeds directly from a centralized control room. Complex heating and holding programs are executed automatically, minimizing manual error and ensuring batch-to-batch stability.

PLC interlocks further enhance safety and precision—particularly during dilution, washing, and filling. Critical steps such as polyester dilution only proceed when the resin temperature reaches a safe threshold, preventing gelation accidents and guaranteeing reliable reaction control.

2. Precision Dosing and Homogeneous Mixing

Accurate raw-material feeding is fundamental to consistent product quality.
Our feeding system uses high-precision loss-in-weight scales and mass flowmeters to dose solid and liquid materials—including polyols, polyacids, cyanuric acid for TGIC, epoxy chloropropane, and styrene—with exceptional accuracy. Each formulation is locked within the MES system, and deviations immediately trigger alarms and halt production.

During mixing, polyester resins are homogenized using variable-frequency anchor or paddle agitators during reaction, followed by high-speed dispersers during dilution. TGIC materials undergo high-efficiency alkaline ring-closure reactions and multi-stage counterflow washing to remove inorganic impurities, ensuring purity and stable performance in powder-coating systems.

3. Digital Traceability & Comprehensive Batch Management

Every batch produced at PCOTEC carries a unique batch/lot number throughout its lifecycle—from raw-material entry to finished-product delivery.
Through MES integration, data from DCS, PLC, and LIMS is unified to create a complete digital record. Scanning a product’s batch number provides immediate access to:

• Raw-material origins and inspection reports

• Full reaction temperature/pressure curves

• Dosing records and operator information

• In-process QC data and final inspection results

This end-to-end traceability system allows rapid root-cause analysis and targeted recall if needed, significantly strengthening customer confidence and quality assurance.

4. Production Equipment Supporting Consistent Quality

Our facilities are equipped with advanced reactors, distillation columns, thermal-oil heating systems, crystallization lines, centrifuges, thin-film evaporators for ECH recovery, filtration systems, and automated packaging units.
These assets ensure that both polyester and TGIC production processes operate under controlled conditions, enabling us to meet high standards for reaction completion, purity, safety, and efficiency.

5. Standardized Operating Procedures (SOPs)

PCOTEC operates under a fully established SOP framework covering production, testing, equipment operation, and safety:

• Production SOPs define every step—from equipment checks, raw-material preparation, dosing, reaction control, transfer, to final packaging.

• QC SOPs standardize methods for acid value, viscosity, epoxy equivalent, hydrolyzed chlorine, melting point, and other key metrics.

• Maintenance SOPs ensure equipment remains in optimal condition through preventive servicing and calibration.

• Safety & Environmental SOPs govern emergency response, hazardous-waste handling, and emissions management, fully aligned with ISO45001 and ISO14001 standards.

6. Process Standards for Key Product Lines

Polyester Resins

Production follows a controlled process—material prep, esterification, endpoint monitoring, cooling/dilution, filtration, and packaging.
Each batch must meet internal specifications for acid value, viscosity, gel time, color, and solids content.

TGIC

Manufacturing involves raw-material prep, addition reaction, alkaline ring-closure, multi-stage washing, ECH recovery, crystallization, centrifugal drying, and filtration.
Core quality metrics include epoxy equivalent, hydrolyzed chlorine, melting point, volatiles, and color, with hydrolyzed chlorine control being the top priority.

Conclusion

PCOTEC’s production system combines digital automation, precision engineering, strict SOPs, and robust traceability to deliver stable raw materials for powder-coating formulations. With advanced reaction control, reliable batch consistency, and comprehensive quality management, we provide manufacturers with raw-material solutions that support high performance, safety, and long-term reliability in their coating systems.

Sustainability is becoming a defining direction for the global powder coating sector, influencing how raw materials are designed, produced, and applied. With stricter environmental regulations and rising demand for safer, cleaner coatings, raw material suppliers must support greener solutions from resin development to curing systems and formulation optimization.

Powder coatings are inherently solvent-free, but true sustainability goes beyond eliminating VOCs. Through advanced polyester resins, eco-friendly curing agents like HAA, silicone resins for durability, and high-efficiency additives, manufacturers can create coatings with lower environmental impact and longer service life—while maintaining excellent mechanical and weathering performance.

1. Eco-Conscious Raw Material Selection

Modern sustainable coatings begin with responsible material sourcing. High-purity polyester resins, non-toxic HAA curing systems, low-ash fillers, and clean additives help reduce hazardous by-products and improve formulation stability. These cleaner chemistries support global compliance and safer production environments.

2. Energy-Efficient Curing Systems

Low-temperature and fast-curing technologies significantly reduce energy consumption during manufacturing. By pairing optimized resins with efficient curing agents, production lines can achieve shorter bake cycles while maintaining film integrity—supporting large-scale, environmentally friendly operations.

3. Extended Coating Lifespan

Durability is central to environmental impact. Weather-resistant silicone components, stable polyester resins, and performance additives enhance gloss retention, corrosion protection, and mechanical strength. The result is a longer-lasting coating that reduces repainting frequency and material waste.

4. Waste Reduction & Cleaner Production

Cleaner production is another key sustainability goal. Our raw materials are engineered for smooth processing, stable flow, and reduced defect rates. Degassing agents, leveling modifiers, and micronized waxes minimize coating failures, lowering rework and overspray during application.

5. Supporting a Circular and Compliant Industry

As environmental standards evolve worldwide, raw material suppliers help manufacturers meet certifications and regulatory requirements. We provide formulation guidance, sustainable alternatives, and technical support to ease the transition toward greener and safer coating systems.

Our Commitment to Sustainability

We continue to advance sustainable powder coating materials through:

• Low-temperature, durable polyester resin systems

• Eco-friendly curing solutions such as HAA

• High-performance additives for stable film formation

• Fillers optimized for clean performance and environmental compliance

Our technical team supports partners in achieving greener production, consistent quality, and long-term sustainability goals.

We provide end-to-end support—from material selection to application testing—to accelerate development and reduce risks.