GY-MT40 is a surface-treated, white powder matting agent engineered for rigorous
industrial processing conditions. Key physical and chemical properties are summarized below.
| GRADE | GY-MT40 |
| Physical State | Powder |
| Color | White |
| Heat Resistance | Excellent |
| Specific Weight | 0.4 g/cm3 |
| Surface Treatment | Yes |
| Moisture Content | ≦0.6% |
| pH | 8±1 |
GY-MT Series effectively reduces surface gloss across a wide range of plastic substrates.
The images below illustrate the visual difference between untreated glossy surfaces and
matte-finished surfaces achieved with GY-MT Series matting agent.
High-gloss surface finish with strong light reflection. Standard untreated plastic surfaces
exhibit high gloss levels, which can cause visual glare and reduce perceived product quality in premium applications.
Uniform matte surface finish with significantly reduced gloss.
Micro-surface irregularities created during curing or molding scatter light evenly,
producing a premium, soft-touch appearance.
Using GY-MT Series can help manufacturers:
Typical applications include:
GY-MT Series is widely used across industries where premium matte surface finishes are required.
Below are representative application examples.

Processing Methods
Suitable for: Injection molding · Extrusion · Compounding · Resin blending
Recommended dosage: 3% – 9%.
The dosage may be adjusted depending on: resin type, desired gloss level, and processing conditions.
GO YEN CHEMICAL INDUSTRIAL CO., LTD. (GYC GROUP) is a leading manufacturer
of specialty chemicals headquartered in Asia. With decades of expertise, GYC Group is
committed to supplying innovative products and tailored solutions to customers worldwide
— continuously expanding to meet evolving market needs across industries.
Products adopted by alloy and automotive material manufacturers both domestically and internationally.
Dedicated to developing specialty chemicals that solve real-world processing challenges.
Solutions designed to satisfy and expand market demand across plastics, automotive, electronics, and more.