Dear Sirs,

  I am looking for the addresses of the companies producing hollow
fibers made of porous polypropylene. I need these hollow fibers to the
experiment with the extraction membranes (fluid membranes).

I look forward to hear from You.

Sincerely Yours

dr hab. Marek Majdan

20-031 Lublin, UMCS, Faculty of Chemistry, POLAND
phone: 48 81 537 57 29