Tsim los rau kev nplij siab, nws softness, kev txhawb nqa thiab kev tsim tshiab ua rau nws muaj kev xaiv zoo tshaj plaws hauv cov menyuam txaj.
Zoo meej rau cov menyuam yaus, peb tshwj xeeb flip-wave tsim tailors rau cov menyuam loj hlob nrog ib sab me ntsis siab dua lwm qhov.Pib ntawm sab qis thiab thaum tus me nyuam loj hlob tig lub hauv ncoo kom haum zoo dua.Cov contours ib txwm ua raws li tus menyuam lub taub hau muab kev txhawb nqa tseem ceeb rau kev sib raug zoo ntawm caj dab thiab txha nraub qaum.