S 2025 is a UV‑absorbing functional dye designed for incorporation into polymer film applications where control of light transmission is required. It is an organic dye supplied as a green to brown crystalline powder and exhibits strong absorption in the near‑ultraviolet to visible light region.

S 0337 is a UV-absorbing functional dye designed for incorporation into polymer films to provide effective light absorption and optical protection. It is a cationic organic dye supplied as dark green crystalline material and exhibits strong absorption in the near UV to visible light region, making it suitable for applications where control of light transmission is required.