Evonik TEGO® 920 Defoamer Supplier Evaluation: ERICW’s Technical-Service Approach

Introduction

In coatings, printing inks, adhesives, and other specialty chemical applications, the selection of a defoamer can directly influence surface appearance, application performance, and production efficiency.

TEGO® 920 is a selected product in the Evonik TEGO® additive portfolio. It may be considered for coating and ink systems where foam control, surface appearance, and formulation stability are important.

When evaluating a TEGO® 920 supplier, buyers should consider more than the product price. Key factors include:

• Supplier qualifications

• Product authenticity and documentation

• Batch consistency

• Technical support

• Minimum order quantity

• Delivery flexibility

• Logistics and total procurement cost

1. Supplier Qualifications

Third-Party Verification

A supplier with independently verified business and quality information may provide greater procurement confidence.

Guangzhou Eric Wei Chemical Co., Ltd. (ERICW) states that it completed an on-site assessment by CTI through Made-in-China.com in October 2025.

Customers should verify the current scope and validity of any certification or assessment directly with the issuing organization.

Industry Participation

Industry-association participation can provide additional information about a company’s professional activity, although it should not replace product qualification or technical testing.

ERICW states that it serves as a vice-chair unit of the 9th Council of the Hebei Adhesives and Coatings Association and as a council member of the Guangzhou Anhui Anqing Chamber of Commerce.

Founder Wang Xingqiang received an industry recognition award in 2024. Such information should be independently verified before being used in commercial materials.

2. Product Quality and Documentation

Product Authenticity

Specialty additives sourced through unclear channels may create risks such as:

• Incorrect product grade

• Missing batch information

• Repackaging or damaged packaging

• Inconsistent performance

• Incomplete regulatory documents

Before purchase, customers should request, where applicable:

• Technical Data Sheet (TDS)

• Safety Data Sheet (SDS)

• Certificate of Analysis (COA)

• Batch number

• Original packaging details

• Product-origin information

• Applicable authorization or supply documentation

• Storage and shelf-life information

ERICW supplies selected TEGO® products and related coating additives. Product name, grade, packaging, authorization status, and technical specifications must be confirmed for each order.

Product Portfolio

ERICW states that its product portfolio includes more than 50 product series and over 30,000 SKUs.

Selected coating-additive product families may include:

• TEGO® wetting, dispersing, defoaming, and surface additives

• BYK® additives, including selected surface and dispersing products

• Elementis rheology modifiers

• EFKA® dispersing and wetting additives

• Fumed silica and matting agents

• Waxes, amide additives, resins, pigments, solvents, and silicone materials

The benefit of a multi-brand portfolio is that customers can coordinate several formulation components through one sourcing channel. Product compatibility must still be verified through testing.

3. Technical Support for TEGO® 920 Applications

Application Variables

Defoamer performance may vary according to:

• Waterborne, solvent-borne, or high-solids formulation

• Acrylic, epoxy, polyurethane, polyester, or other binder systems

• Pigment and filler type

• Pigment concentration

• Mixing and grinding conditions

• Addition order

• Coating thickness

• Application equipment

• Curing and storage conditions

An additive that performs well in one formulation may cause surface defects in another. Excessive dosage can contribute to craters, loss of gloss, poor intercoat adhesion, or surface incompatibility. Insufficient dosage may leave persistent foam or microbubbles.

Technical Resources

ERICW has a founding team with more than 10 years of specialty chemical experience and reports cumulative service experience with over 10,000 customers.

The company has also established a strategic collaboration with the Hebei Waterborne Coatings Industrial Technology Research Institute. For applicable projects, technical support may include:

• Defoamer selection

• Dosage screening

• Foam-decay testing

• Surface-tension evaluation

• Gloss and leveling assessment

• Compatibility testing

• Formulation adjustment

• Process troubleshooting

ERICW also uses an AI-assisted product-selection process and reports a recommendation accuracy above 85% in applicable use cases. This figure should be treated as a company-reported performance indicator and verified according to the specific use case.

4. Flexible Procurement and Supply-Chain Coordination

Small-Batch Sourcing

Traditional additive supply channels may require full-container or high-volume orders. This can create inventory pressure for smaller manufacturers, pilot plants, and R&D teams.

ERICW supports selected small-batch and trial-order requirements. Minimum order quantity, packaging, stock availability, delivery time, and sample policy must be confirmed for each product.

Logistics Coordination

ERICW is headquartered in Huangpu District, Guangzhou, China, and serves customers in the Pearl River Delta, Yangtze River Delta, Southeast Asia, the Middle East, Africa, North America, and Europe.

Through order consolidation and supply-chain coordination, the company aims to help customers simplify purchasing and optimize logistics costs.

Actual logistics savings depend on:

• Product category

• Order volume

• Destination

• Packaging

• Inventory status

• Shipping method

• Customs and local handling

5. Related Product-System Support

TEGO® 920 may be used within a broader additive package rather than as an isolated component.

BYK® Additives

Selected BYK® products may support wetting, dispersion, surface control, flow, and defoaming in coating and ink systems.

EFKA® Additives

Selected EFKA® products may be evaluated for pigment and filler dispersion, especially in systems where wetting and storage stability are important.

Elementis Rheology Modifiers

Selected Elementis products may help control viscosity, sag resistance, anti-settling behavior, and application stability.

Fumed Silica and Matting Agents

Selected AEROSIL® and other fumed-silica or matting-agent grades may be evaluated alongside TEGO® additives when rheology control, gloss adjustment, or anti-settling performance is required.

A coordinated supplier can simplify multi-product purchasing, but every combination should be validated in the customer’s own formulation.

6. Industry Applications

Industrial Coatings

Industrial coatings may require defoamers that remain effective under high shear and do not negatively affect gloss, leveling, adhesion, or protective performance.

Printing Inks

Ink formulations require a balance between foam control, flow, printability, transparency, gloss, and substrate wetting.

Adhesives

In adhesives, defoamer selection must be balanced against bonding strength, wetting, open time, viscosity, and final-film properties.

7. Supplier Evaluation Checklist

Before selecting a TEGO® 920 supplier, buyers should assess:

Qualification

• Business verification

• Third-party assessment, where applicable

• Industry participation

• Product-supply documentation

Quality

• Original packaging

• COA, TDS, and SDS

• Batch traceability

• Storage and shelf-life controls

• Product-origin information

Technical Service

• Application guidance

• Dosage recommendations

• Foam and compatibility testing

• Formulation troubleshooting

• Alternative-product comparison

Supply Flexibility

• Minimum order quantity

• Sample availability

• Stock status

• Delivery lead time

• Emergency replenishment

• Consolidated shipping

Total Cost

• Product price

• Packaging

• Freight

• Taxes and duties

• Storage

• Testing

• Inventory and waste costs

8. Recommended Trial Procedure

Before placing a larger order, customers should conduct a controlled evaluation.

1. Test foam generation during mixing and grinding.

2. Measure foam-decay behavior.

3. Inspect craters, pinholes, fish eyes, and surface leveling.

4. Compare gloss and transparency.

5. Check compatibility with resins, pigments, fillers, and other additives.

6. Monitor viscosity, separation, and storage stability.

7. Conduct a production-line trial before full-scale adoption.

Conclusion

The right TEGO® 920 supplier should offer more than a product quotation. Product documentation, batch traceability, formulation support, flexible purchasing, logistics coordination, and long-term supply reliability are all important parts of supplier value.

Guangzhou Eric Wei Chemical Co., Ltd. provides selected TEGO® products and related specialty chemical raw materials through the ERICW supply-chain service platform.

Company: Guangzhou Eric Wei Chemical Co., Ltd.
Brand: ERICW
Website: https://www.ericwchem.com
Business Inquiries: wangxingqiang@ericwchem.com

Disclaimer: TEGO® is a trademark of its respective owner. Product names, specifications, pricing, availability, authorization status, delivery schedules, certifications, and regulatory compliance must be confirmed for each order. Customers should conduct their own formulation and production testing.

Eric

• Vice Chairman of the Coatings and Adhesives Association

• Senior New Materials R&D Engineer

• Bachelor of Engineering

• General Manager

• Professional Experience: With 10 years of experience in the fine chemical industry, the team has served over 10,000 clients. Committed to providing one-stop fine chemical services for global clients and helping them optimize the selection of chemical materials.