-tl:pt dam bao thog tjn cho hoat dog wan ly va sx

+tl vjet sao chep

+tl tao hjh

+tl ghj am

+tl tog hop

-tl trog ll csnd co kn gjog nhu kn chug ve tl trog hoat dog wan ly nha nx xog tl trog l2 csnd con fan anh tjh hjh ket wa hoat dog dau trah fog chog toj fam gop fan bao ve antt

-hs la 1 tap hop cax tl co moj qh voj nhau phan anh ve 1 nguoj 1 su vat 1 van de

-ho so nv cs la tap hop cax loaj thog tjn tl fan ah ve cog tax dt nghjen cuu xu ly tf cax vu vffl khax.va wan ly nha nx ve ttxh dc to chux sap xep theo wj trjh thog nhat de phux vu cax hoat dog nv of cs nhan dan

-tag thu nghjep vu cs la noj tap trug luu tru ho so tl nv the phjeu wan ly thog tjn ve vu vjex doj tuog mag luoj bj mat can cuox of cog dan can fam va 1 so nguoj vffl khax dc tap trug wan ly thog nhat de tra cuu khaj thax fux vu cax yeu cau cog tax of l2 cog an va cax to chux ca nhan khax.

=>cog tax hs,tt,nghjep vu csnd la cog tax nv bao gom hoat dog thu nhan tjxh luy luu thu khaj thax cug cap thog tjn taj lieu fan anh ve tjh hjh ket wa cog tax nv va wan ly nha nx ve ttatxh of l2 csnd de dau trah fog chog tf gop fan bv antt