This enzyme product is developed based on synthetic biology technology with AI-assisted structural redesign. By optimizing mannosidase/mannanase genes derived from extremophilic microorganisms and utilizing expression systems such as E. coli, yeast, and Bacillus subtilis, it achieves high-density and high-efficiency production of enzyme protein. It features high specificity, continuously hydrolyzing ��-1,4 glycosidic bonds in guar gum and its modified products, achieving thorough breaking and effectively removing formation damage caused by fracturing fluid residues and filter cake. This product is a high-temperature biological enzyme breaker specifically developed for guar gum fracturing systems in shale oil wells and high-temperature reservoirs. It maintains high activity under high-temperature and high-pressure conditions, enabling fast and complete breaking.