Txhim khu kev qha, lub zog-npaum HVAC & R * systems yog tseem ceeb, high-thov Cheebtsam nyob rau hauv lub tsim, kev tsim kho, thiab cov lag luam uas muaj thiab coj mus muag vaj tse - thiab nyob rau hauv muab kev pab zoo nplij siab rau lawv neeg. Yog li ntawd, nws yog kiag li qhov tseem ceeb rau Thawj Khoom txiv neej ...
nyeem ntxiv