Multicolored embroidery thread is made of 100% viscose filaments.We have in stock,you also could choose 2-5 or even more colors of each yarn,providing infinite possibilities of embroidery design.
The Covid 19 Antigen Saliva Rapid Test (Colloidal Gold) is a rapid visual immunoassay for the qualitative, presumptive detection of COVID-19 antigens from saliva.