... but not easy to break)Attached with metal ring which pass European standard.CertificateCE,EN,SGS,ROHS,CA65Cooperated withCoco Cola,Walmart ... is a product which you can design yourself and make it happen without much cost.And you can find many applications ... after confirmation of order. And we can always make it happen if you need the orders urgently.Shipping choiceDHL,FEDEX,TNT,UPS ...