Abstract Ultra-low mass primordial black holes (PBH). briefly dominating the expansion of the universe. would leave detectable imprints in the secondary stochastic gravitational wave background (SGWB). Such a scenario leads to a characteristic doubly peaked spectrum of SGWB and strongly depends on the Hawking evaporation of such light PBHs. https://parisnaturalfoodes.shop/product-category/glucosamine/