Inquiry (采购产品): Project Requirement Requirement: We are looking for an indoor and outdoor use magnet(s) that will work well in temperatures between -100F and +250F to move (by magnetic attraction) a 500 pound rectangular iron object across a cement surface from 6 feet away. The magnet(s) will need to be permanently affixed and the 500 pound object will be movable. Any suggestions as to type, size, and quantity of magnet(s) and method of permanently affixing them would be very much appreciated. Thank you. **** Hidden Message ***** Gary Russo FL 33180 USA Company: JJ Garrett E-mail: parapat2000@aol.com **** Hidden Message ***** parapat2000@aol.com