1

About หัวเจียรเหล็ก

penaias503qxd5
The English Chemist Joseph Priestley gave it the name rubber in 1770 when he uncovered it may be used to rub out pencil marks. Its major professional achievements arrived only following the vulcanization procedure was invented by Charles Goodyear in 1839. Normal rubber is the one non-synthetic rubber. This is Successfully Submitted (Awaiting Approval)
Report this page

Comments

    HTML is allowed

Who Upvoted this Story