Chemical Treatments of Natural Fibre Chemical treatment of hazardous waste involves converting it into non-toxic gases by changing or altering its chemical characteristics. Various treatment methods are used, such as reducing solubility or acidity through neutralization or pH adjustment, precipitation or oxidation and reduction, hydrolysis and photosynthesis, chemical oxidation (such as ozonation, electrolytic oxidation, and hydrogen peroxide), and chemical removal (such as alkali metal dichlorine and alkali). Commonly used chemical treatment processes include metallization, activated chemical treatment processes, chemical precipitation, neutralization absorption, disinfection (using chlorine, ozone, UV light), and ion exchange. Natural fibers obtained from the plant kingdom include cotton, flax, jute, bamboo, sisal, and co-conut husks. Cotton and flax are examples of seed hairs, while jute is an example of stem (or bast) fibers. Sisal is an example of leaf fibers. Animal fibers include secretions such as wool, hair, and silk. Popular animal fibers include angora and mohair. This paper reviews various chemical properties of natural fiber-reinforced composites, including changes resulting from the use of natural fibers. Chemical treatments, such as alkali, silane, acetylation, benzoylation, acrylation, malate coupling agents, isocyanates, permanganate, and others are discussed in relation to their effect on the fiber surface. The aim of these treatments is to improve adhe-sion between the fiber and polymer matrix. As a result, water absorption of composites decreases and their mechanical properties are improved. The Statistical Package for Social Sciences, commonly known as SPSS, quickly gained popularity in the 80s and 90s, ex-tending beyond the commercial sector to the social sciences. The original name was dropped, and the name was shortened to "SPSS." Several attempts were made to introduce a word that fits the acronym "SPSS," but they often failed. In the early 2000s, "Statistical Packages and Software Services" was used for some years, but eventually dropped. "SPSS" became just a name and was no longer short for anything. There is, however, a detailed history of SPSS from 1968 to 2009, which is available to anyone interested. The industries included in this study are the non-metal mineral product industry, general equipment manu-facturing, mining and washing of coal, textile industry, food manufacturing industry, and special equipment manufacturing. The Cronbach's Alpha reliability test was conducted, and the overall Cronbach's Alpha value for the model is 0.744, indicating a 74% reli-ability rate. Based on the literature review, a model with a Cronbach's Alpha value of over 0.50 can be considered for analysis. The text appears to be correct as it is. The Cronbach's Alpha reliability test was conducted, and the overall Cronbach's Alpha value for the model is 0.744, indicating a 74% reliability rate. Based on the literature review, a model with a Cronbach's Alpha value of over 0.50 can be considered for analysis.