SPM is one of the world's leading manufacturers of blood collection PET tubes. The company's Green Vac-Tube (GVT) was introduced in Bangladesh in January 2011. 

There are many diverse options for the usage of GVT tubes in Bangladesh. The practical functions of GVT tubes in chemistry, immunology, and serology for example, involve playing a crucial role in a variety of procedures which include:

- Determining ABO blood type
- Conducting an indirect Antiglobulin Tests (IAT) 
- Determining RH Immune Globulin
- Determining Rheumatoid Arthritis: RA, and Rheumatoid Factors (RF)
- Syphilis testing such as Rapid Plasma Reagin (RPR)
- Venereal Disease Research: VDRL or Fluorescent Treponemal Antibody Tests (FTABS)
- Treponema pallidum haemagglutination test
- Strep testing: Streptozyme or Anti-streptolysin O (ASO Titer)
- Pregnancy testing

For a more comprehensive list of products and their uses, please see here.