The Beijing Municipal Office for Saving Paper was responsible for this poster that urges the population to economize on the use of paper, to collect and re-use old paper boxes, to further support the revolution. The poster shows which types of paper the Office is interested in. It tells us, among other things, that one ton of recycled paper boxes saves the nation 500 kilos of coal and 350 Watts of electricity. Finally, it helpfully provides the viewer with addresses and telephone numbers of the factories and offices where s/he can sell his/her used paper; this address section moreover explains which places are specialized in which specific types of used paper.
Beijing shi jieyue banzhi bangongshi (北京市节约板纸办公室)