... .ISO9001:2012,SGS,IQTC 5.Main Export:Europe,North America, South-east,Asia Layer:1-layer2-layer3-layer5-layer √ Printing:offsetsilk-screenhot-stampinglabeling ... sample approvedPaymentL/C,T/T,Paypal,etc.1.Specification: diameter in 13,14, 16, 19, 22, 25, 30, 35, 38, 40 ...