Rubber , raw synthetic - determination of the molecular - mass distribution of solution polymers by gel permeation chromatography 合成生橡胶.用凝胶渗胶透色谱法测定溶液聚合物的分子质量分布
Special designed of control switch and strip type gun with increase seal device , it could guarantee not seep or leak adhesive , strict control result in waster on account of leak adhesive 专业设计的控制开关和点状枪体增加密封装置,保证不渗胶或漏胶,严格控制由于滴胶所造成的废品。