Soap is a general term for fatty acid metal salts. Generally, the carbon number of fatty acids in daily soap is 1-18. The metal is mainly alkali metals such as sodium or potassium, and some organic bases such as ethanolamine and triethanolamine are also used to make special-purpose soaps. Broadly speaking, fatty acid salts obtained by saponification or neutralization of oils, waxes, rosin or fatty acids with alkali can all be called soap.

Soap can be dissolved in water, and has the function of washing and decontamination. All kinds of soaps are soap, also known as toilet soap, metal soap and compound soap. Ingredients of soap: sodium salt of carboxylic acid R-CO2Na, synthetic pigment, synthetic perfume, preservative, antioxidant, foaming agent, hardener, thickener and synthetic surfactant.

In hard water, soap and Ca2+,Mg2+, etc. form curd-like substances, fatty acid calcium salts, etc., which are commonly called "calcium soap" and become useless detergents. Adding softener to hard water can remove hard water ions and make soap work. Medicinal soap is mainly added with some disinfectants. Soap adds essence to it. Crystal soap has a particularly strong degreasing power because it contains soap alkali.

bajie intellectual property trademark transfer network found that the soap trademark belongs to the 31 small class soap, soap and other cleaning articles for others, bleach and other materials in the 3rd category, and the specific scope is as follows:

almond soap 37, soap *312, shaving soap 317, hair cream *334, and soap bark for washing 393. Sweat foot soap 3143, deodorant soap 3149, soap 3152

hand washing cream C31, shampoo powder C32, shampoo C33, shampoo soft soap C34, hair softener C35, facial cleanser C37, bath lotion C38 and bath salt C38. Soaps on the market now are all of the same kind, but the prices are different. Why? Mainly because of the brand effect of trademarks.

usually, the price of high-quality trademarks is not measured by specific prices, because the price of high-quality trademarks may be 1,, or even hundreds of thousands or millions. Of course, there are thousands of common trademarks, depending on their hidden value and the value they play in the later period.