V.ITD CO., LTD supplies construction materials, such as non-ami roof sheet. Since 2008, non-ami roofing products using PVA have been supplied widely for domestic and international market with very high quality, meeting the toughest requirements of customers.V.ITD CO., LTD supplies construction materials, such as non-ami roof sheet. Since 2008, non-ami roofing products using PVA have been supplied widely for domestic and international market with very high quality, meeting the toughest requirements of customers.