Khoom nta:Nws yog qhov haum rau kev ua thiab kev tsim cov khoom siv hluav taws xob hauv lub Hoobkas, kev teeb tsa sab nraum zoov, vaj huam sib luag ntawm cov neeg saib xyuas thiab lwm thaj chaw; Raws li cov txheej txheem uas yuav tsum tau ua ntawm cov neeg siv sib txawv, cov cuab yeej tuaj yeem xaiv cov haujlwm xws li 0-90 ° Tig, 0-360 ° Kev sib hloov, thiab lwm yam; Rau cov chaw sib txawv composite board, ntau hom khob khob tuaj yeem xaiv tau.