Bonchem (A Division of Synthachem Technical Services (Pty) Ltd) . Bonchem, a South African-owned company based in Sebenza, Edenvale, Gauteng, was founded in 1981 by the late Bert Neumann. His deep-rooted principles and business ethic laid the foundation for Bonchem to grow as a market competitor for the past 35 YEARS. Bonchem has been supplying the South African industry with QUALITY products, TECHNICAL service and INNOVATIONS over this period. Bonchem has been of service to many industries including: Mining, Petrochemical, Steel and Food Industry just to name a few, in supplying site-specific formulated water treatment programs to protect water reticulation systems against scale, corrosion and fouling, which in the end makes it re-usable.