What is roll forming? Answer from Wikipedia!
Roll forming, also spelled rollforming, is a continuous bending operation in which a long strip of metal sheet (usually steel coils, like PPGI, GI, PPGA, Aluminum etc)…
Day: September 21, 2015
Arrangement for Mid-Autumn Festival & The National Day Holidays in 2015
Middle Autumn Festival is a harvest festival celebrated by ethnic Chinese and Vietnamese people. The festival is held on the 15th day of the eighth month…
