Promois International LT.

vVitamin H is another name for the vitamin called biotin (Vitamin B7) — a water‑soluble B‑complex vitamin. 
The “H” in “Vitamin H” originally came from the German words “Haut und Haar” meaning “skin and hair”, reflecting its noted role in skin/hair health. 
Biotin functions as a coenzyme for several carboxylase enzymes involved in metabolism of fats, carbohydrates and amino acids.

A liquid vitamin‑mineral supplement is a ready‑to‑use fluid formulation containing a blend of vitamins (fat‑ and water‑soluble) and mineral elements (macro and trace) intended to be administered to animals (cattle, buffaloes, sheep, goats, poultry, etc) via drinking‑water, oral drench or mixed into feed.
For example: one product states

Aqua Feed Supplements are specially formulated nutritional additives used in aquaculture to enhance the overall health, growth, and productivity of aquatic species such as fish, shrimp, and prawns. These supplements are designed to balance or enrich regular feed by providing essential nutrients that may be lacking in the base diet or pond environment.

“Chelated minerals” (also called mineral chelates or organic mineral complexes) refer to mineral ions (typically trace minerals, e.g., zinc, copper, manganese, cobalt, iron) that are chemically bound (or “chelated”) to organic ligands such as amino acids, peptides, or protein hydrolysates.