Cov chaw ntau pob yog qhov chaw rau pej xeem sib sau ua ke, tshwj xeeb tshaj yog cov neeg tuaj saib sib sau. Cov tsev no muaj ntau yam kev cai thiab cov kev txwv kom muaj kev nyab xeeb rau pej xeem. Ntawm lawv, kev nyab xeeb yog qhov tseem ceeb tshaj plaws. Thaum npaj koj cheeb tsam cov neeg tuaj saib, muaj ntau yam los xav txog, uas feem ntau cuam tshuam.
Piv txwv li, thaum txiav txim siab qhov luaj li cas ntawm cov neeg tuaj saib khiav tawm ntawm txoj kev, kev siv yuav tsum tau ua rau nws cov neeg tuaj saib sib tham thiab tus naj npawb ntawm cov rooj zaum hauv txhua cheeb tsam cov neeg tuaj saib. Cov neeg saib hauv chaw ntau pob feem ntau muab faib ua cov blocks, txhua tus nrog nws tus kheej cov neeg tuaj saib tag nrho thiab kev khiav tawm. Cov chaw ntau pob uas muaj cov ru tsev lossis cov ru tsev ib nrab ua tau raws li qhov yuav tsum tau muaj kev nyab xeeb zoo dua li cov chaw ntau pob qhib.
Ua ntej tshaj plaws, cov khoom siv kho tshuab xav tau kev cuam tshuam, qaug zog ua haujlwm thiab lub zog siab. Lub rooj zaum saum npoo thiab backrest static load ua ke kuaj: static load 1600n, lub rooj zaum rov qab dynamic load 760n, tsis muaj xoob deformation tom qab 10 zaug, lub rooj saum npoo thiab lub rooj zaum rov qab tshuav load 1600n, thiab lwm yam. lub rooj zaum thiab backrest ua ke durability xeem: lub rooj thauj khoom 950N, lub rooj zaum rov qab yog 330n, thiab nws yog loaded 100, 000 zaug tsis muaj deformation xoob. Xws li lub rooj zaum grandstand yog tsim nyog.
Qhov thib ob, qhov txwv ntawm cov khoom tsis zoo kuj tseem ceeb heev. Raws li kev soj ntsuam ntawm National Quality Supervision and Inspection Center saum toj no lub xeev thiab ua tau raws li cov kev cai ntawm "Public Seats of Stadiums". Cov hlau hnyav yog soluble lead, cadmium, chromium, thiab mercury. Tsuas yog nyob rau hauv txoj kev no tuaj yeem pom qhov tsim nyog ntawm cov rooj zaum loj, thiab lawv yuav tsum raug tshuaj xyuas los ntawm National Quality Supervision and Inspection Center saum toj no lub xeev thiab ua tau raws li cov cai ntawm "Public Seats in Stadiums".
