core pipe extractor 芯管提取工
paper core pipe 纸芯管
foam-core pipe 芯层发泡管材
iron core pipe 铁芯管
multiple-core pipe 多芯胶管
pvc foam-core pipe pvc芯层发泡管
The invention discloses a polyolefin core pipe and a preparation method thereof.
本发明公开了一种聚烯烃芯管及其制备方法。
Silicon core pipe was prepared with HDPE and silicone resis as the main materials.
以HDPE和硅胶母料为主要原料,制备了硅芯管。
The invention relates to a pen core, which comprises a core pipe with a pen tip. The pen core is characterized in that the pen tip is connected to the pen core through screw threads.
本发明的笔芯,包括带有笔尖的芯管,其特殊之处在于:笔尖通过螺纹连接在笔芯上。
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