tamshui-xinyi line

Ink Institute Tamshui-Xinyi Line is a rich red fountain pen ink from the Taipei Metro series, known for its vibrant color that shifts to grey, yellow, and white in swabs. It offers low shading, no feathering on premium papers, but slightly dry flow and no water resistance, making it well-behaved yet best for dry climates or careful users. It suits fountain pen enthusiasts seeking a bold, readable red for daily writing on quality paper.[1][3]