- Cov Ntawv Thov Kev Lag Luam: Siv rau lub tshuab nqus tsev ntim, lub tshuab nqus tsev ziab, nqus degassing, nqus tsev distillation, thiab lwm yam.
- Cov Ntawv Thov Kev Kho Mob: Siv rau qhov tsis zoo siab nqus hauv chav ua haujlwm, khoom siv kho hniav, khoom siv hauv chav kuaj, thiab lwm yam.
- Cov ntawv thov hauv chav kuaj: Siv rau lub tshuab nqus tsev pom, lub tshuab nqus tsev kom qhuav, lub tshuab nqus tsev distillation, thiab lwm yam kev sim ua haujlwm.
- Kev lag luam Electronics: Siv rau kev tsim khoom semiconductor, lub tshuab nqus tsev, thiab lwm yam.