From Aug. 18^Canton 20 ສິງຫາ ^Canton , Changshan Group agrranged a new safe production training course in order to develop the knowledge about regulation and law, operation, principle and conception of the safe production. All the directors, vice directior and mangers in charged of ການ​ຜະ​ລິດ​ທີ່​ປອດ​ໄພ​ຈາກ​ວິ​ສາ​ຫະ​ກິດ​ສະ​ມາ​ຊິກ​ຂອງ​ກຸ່ມ Changshan ໄດ້​ເຂົ້າ​ຮ່ວມ​ວິ​ຊາ​ການ​.