Discharge ink printing is a specialized screen-printing technique that removes dye from fabric rather than adding ink on top. This process works best with 100% cotton garments pre-dyed with reactive dyes. Key do's include using high-quality discharge ink, ensuring the design is suitable for discharge (avoid very detailed designs), and pre-testing fabrics to ensure compatibility. Pre-washing garments can also help achieve consistent results. As for don'ts, avoid using this technique on synthetic materials or blends with unknown compositions, as it may not work or could damage the fabric. Also, don't mix discharge inks with regular plastisol inks, as it can neutralize the discharge properties. Lastly, resist the temptation to rush the curing process, as inadequate curing can lead to poor discharge effects.

Metallic coating is a protective or decorative layer of metal applied to the surface of an object. It serves to enhance corrosion resistance, electrical conductivity, reflectivity, and aesthetic appeal. Common methods include electroplating, where an electric current is used to reduce metallic ions onto a substrate, and hot-dip galvanizing, involving dipping the base material into melted metal. Vacuum metalizing, where metal is evaporated in a vacuum and condenses on the surface, is another technique. Each method has its applications, benefits, and limitations, making the choice dependent on the desired outcome, material compatibility, and cost considerations.

When added to concrete. titanium dioxide typically does not alter its color. Despite being a predominantly white pigment. the quantity used in concrete is generally insufficient to entirely modify its hue. Its main purpose in concrete is to harness its photocatalytic abilities. which aid in breaking down air pollutants. Repeated use may lead to lightening of the concrete's appearance. resulting in a whiter or lighter look. Alternatively. when applied on colored concrete. it can enhance the vibrancy of the colors. The final color of the concrete will vary depending on the concentration of titanium dioxide used. so it is recommended to first perform a trial with a small amount.