Bonding liability

With a recent visit to the adhesive manufacturer Delo, we talked also about the topic liability, and this literally ambiguous.
Meant is here who is responsible in the legal sense for a bond?
From the view of the adhesive manufacturer (and that is very important for the user to know) only for certain characteristics of the adhesive, like e.g. tensile strength, elongation of break, shearing strength or e-module a guarantee is generally taken over. But not for e.g. that with this adhesive two construction units lasts 100 years together with a load X. From the view of the dosing plant manufacturer only one guarantee can be taken over for quantity, accuracies or that the adhesive is not stressed or air is entered. It becomes critical particularly with applications of 2-components, since here not only the mixing ratio, but also the mixing quality are extremely important. A respectable supplier will and cannot take responsibility, since too many factors of risks meet here, which are not provable in the case of doubt, and generally also not at all the technical possibilities of an examination are present. The legal liability remains thereby with the user. How now is the proceeding for a new bonding process? Ideal way here is looked for a close partnership between adhesive manufacturers, dosing plant manufacturers and users. Here a close exchange of information must take place from the beginning of the development, which brings in all partners with. It makes a little sense, here (unfortunately often observed) for reasons of the secrecy important data restrainable. Only out from common made experiments data can be determined, which offer high security to the user.