50% txo lub sij hawm tsim thiab tsim, kev tsim kho tus nqi 20% qis dua hauv cov tuam tsev sib piv, txo cov nqi khiav lag luam thiab kev saib xyuas los ntawm 20%, tshem tawm 75% ntawm kev tsim kho, txo lub zog thiab dej los ntawm 50%, xa hluav taws xob sai.#CSCEC# modular thawv tsev# prefab tsev tsev kawm ntawv.#CSCEC#pernanent modular tsev