... 12mm,16MM 2)Materials: iron, brass and nickel Prong Snap Buttons (4pcs/set)1)Size:7.5mm, 9.5mm, 11. ... United Industry Co., Ltd. is the Famouse enterprises in China that specializes in manufacture and sales of the follow ... We are located at Ningbo, China. Ningbo is the one of biggest seaports in China,rank second. It has the ... 2 hours to Guangzhou by air...ect. Metal Prong Snap Buttons China supplier