Zirconium chloride, also known as zirconium tetrachloride, is an inorganic compound with the chemical formula ZrCl4, which is mainly used as an analytical reagent, organic synthesis catalyst, water repellent and tanning agent.

A silica gel desiccant is a substance used to absorb or adsorb moisture from the surrounding environment. Its main function is to prevent moisture, reduce humidity and prevent mould and bacteria from growing.

Trichloroisocyanuric acid belongs to the class of chlorinated isocyanuric acid compounds, which is a more important bleaching agent, chlorinating agent and disinfectant. Compared with traditional chlorinating agents (such as liquid chlorine, bleaching powder, bleaching powder), it has the characteristics of high effective chlorine content, stable storage and transportation, easy to form and use, high bactericidal and bleaching power, long time releasing effective chlorine in water, safe and non-toxic.

Anhydrous ethanol (Ethanol absolute), an aqueous solution of ethanol of high purity, is a mixture of ethanol and water. Generally, the concentration of 99.5 per cent of the ethanol solution is called anhydrous ethanol.