We got the international Certification of ISO 14001:2004,ISO9001: 2000,SGS certificate of quality and ROHS certificate, the EU Standard No: GB05/64865.All the raw materials are fit to the FDA (U.S.A) standard,21CFR 175.105 for the water based PU adhesive. If there are any quality problems within the shelf life, we will refund the payment in 7 days. Now we are the first manufacture can guarantee the 2 years shelf life for the instant super glue. And we also have the strong after service to guarantee the quality standard. It will be a great pleasure to receive your inquires against which we will sent you our best quotation.