One of the biotic polysaccharides-pullulan was selected from many nontoxic biotic materials in order to replace some toxic substances in the liquid used in correction pen.
从无毒生物材料中筛选出生物多糖普鲁兰，代替现有涂改液中的有毒物质，用于涂改液的制作。
Entertainment industry: pen, stapler, inkpad, glue, correction liquid, poker, jigsaw puzzle, toy, artwork, etc.
文娱行业：笔、订书机、订书钉、印泥、胶水、修改液、扑克牌、拼图、玩具、工艺品等；
Entertainment industry: pen, stapler, inkpad, glue, correction liquid, poker, jigsaw puzzle, toy, artwork, etc.
文娱行业：笔、订书机、订书钉、印泥、胶水、修改液、扑克牌、拼图、玩具、工艺品等；
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