In January 2021, AMTE, a Korean functional coating material manufacturer, acquired a patent for a core-shell structured copper sulfide nanoparticles having a selective absorption function in the infrared region, an infrared absorption coating composition containing the same, a retroreflective sheet, or an automobile reflector. 

Founded in 2009, AMTE is a venture company that stands out in the fields of functional films, functional coating materials, and functional nanomaterials, and holds 15 related patents. AMT relocated its headquarters to Yesan in 2019 to increase the number of manufacturing plants and at the same time expand the manufacturing volume, showing growth, and achieved 5 billion won in sales.

Currently, the company is manufacturing functional materials and films applicable to fields such as electronics, energy, automobiles, and architecture by creating materials for various purposes through the development of new technologies and succeeding in developing energy-saving materials and films.

In addition, it manufactures displays and industrial materials based on synthesis, dispersion, and blending technologies, which are essential technologies in the increasingly advanced nano-materials and functional materials fields, and abundant research experience, and supplies new materials tailored to customers' needs.

AMTE's flagship products are as follows.

1. Product: Stretchable, Self-Healable, Anti-Fouling Coating for TPU
- Model: TPU-T3701S (M) | TPU-T3701S (H)
- Appearance: Transparent | Transparent
- Viscosity (@25℃): 6±2cPs | 45±3cPs
- NVC (2hr@105℃): 25±3 % | 70±3 %

2. Product: Anti-Fog Film
- Structure: 5 layer (Release Film – Acrylic Adhesive – Base Film – Anti-Fog Coating – Protective Film) 
- Model: TERAFIL AFG-C0503 | TERAFIL AFG-P0502
- Transmittance: > 90% | > 90% (Tested by JIS K7105)
- Haze: < 2% | < 2% (Tested by JIS K7105)

3. Product: Nano Dispersions for Ultraviolet Ray Shielding
- Model: TERASOL ZNO-UV35(MOH) | TERASOL ZNO-UV35(MEK)
- Viscosity: < 5cPs | < 5cPs
- ZnO Contents: 35% | 35%
- Average Particle Size: 20~30nm | 20~30nm