1. Muaj peev xwm tswj tau cov dej tsis muaj zog.
2. Kev loj hlob sai.
3. Cov kua dej tsawg tsawg.
4. Haum rau ntau hom cement thiab dej.
5. Ib qho zoo heev versatility, siv rau ntau hom cement system.
Post lub sij hawm: Dec-07-2018
Post lub sij hawm: Dec-07-2018