， The anchor strength of JN-S Chemical Anchor cann¨t reach demand strength.
　， Anchoring strength of JN-Z Rebar Setting Injection is under demand.
　， It is difficult to press JN-Z Rebar Setting Injection.
　， JN-Z Rebar Setting Injection does not cure.
　， The flow is small and flow rate is slow when you place adhesive to adhesive steel plates.
　， The adhesive layers between the carbon fiber and concrete separate.
　， Bonding strength between steel plate (carbon fiber)and is low.
　， The adhesive layers between the steel plate and concrete separate when you adopt placing adhesive construction.
　， The bonding of the ends that steel plates (or carbon fiber) bond with concrete is not ideal and easily separate.
　， The surface carbon fiber adhesive tacky(when initial set it stick hands), blushing(just as there is a layer thin adiaphanous moisture)or sweat(there is a layer of oil).
　， The surface reinforced steel plate or carbon fiber can not be plastered or the screed easily fall off.
　， Adhesive contains too much air bubbles.
　， The viscosity of adhesive is big,make brush and place in trouble.
　， JN adhesive cure too quick,so that you can not construction.
　， JN adhesive layers don¨t curing;The period of curing is very long;The solidification are not at the same level.