Xov xwm

Roj hmab diaphragm foob feem ntau yog siv rau reciprocating motion foob thiab siab nqus foob. Diaphragm yog ib hom ntawm cov roj hmab nyias nyias, tuaj yeem cais ob chav sib txa...

Cov players saum toj kawg nkaus them rau kev lag luam roj hmab yog Von Bundit (Thailand), Sri Trang Agro-Industry (Thailand), Southland Holding Lonza (Thailand), Vietnam Rubber ...

Lub Kaum Ob Hlis 12, nrog kev pom zoo ntawm Pawg Sawv Cev Hauv Xeev, "" 15 Lub Rooj Sib Tham Roj Hmab Thoob Ntiaj Teb 2019 ", qhov kev lag luam uas muaj peev xwm tshaj plaws hau...