Shenhai Explosion-Proof
Hauv kev lag luam hauv tsev, Cov ntawv pov thawj tawg feem ntau tuav qhov siv tau ntawm 5 xyoo. Hnub tas sij hawm yog qhia meej meej ntawm txhua daim ntawv pov thawj rau cov neeg tuav pov hwm pom.
Piv txwv li, Lub sijhawm siv tau rau daim ntawv pov thawj tawg tuaj yeem ncua txij lub Kaum Ib Hlis 4, 2016, mus rau lub Kaum Ib Hlis 4, 2021 - raws nraim tsib xyoos.