Q-CON Lightweight block

Bundle 200 pces Q-CON Block size 20 * 60 * 20 CM = 12 000 B
Bundle 500 pces Q-CON Block size 20 * 60 * 20 CM = 25 000 B
500 pces available now , take off from Ban Tawai Chiang Mai.
Left over from my own construction.