在废纸回用生产卫生纸、仿凸版纸的基础上，对若干废纸浮选脱墨问题进行探讨。
The production line of deinking domestic waste paper with flotation-washing process was investigated.
单色套印，在中国首创唯一一家用影写凹版印刷，用过铅印、铜印、凸版印刷，手动续纸。
The first publication adopting photogravure single-color printing method. Letterpress printing, copper stamp, relief printing and manual feed were used.
单色套印，在中国首创唯一一家用影写凹版印刷，用过铅印、铜印、凸版印刷，手动续纸。
The first publication adopting photogravure single-color printing method. Letterpress printing, copper stamp, relief printing and manual feed were used.
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