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)
About หัวเจียรเหล็ก
Internet 10 days ago penaias503qxd5Web Directory Categories
Web Directory Search
New Site Listings