0.6% would be a very low fiber volume. This could be done by adding chopped fibers into the epoxy when mixing your A/B parts.

Did you mean 60%? That would be a very high fiber volume. I would recommend a glass fiber prepreg, laying up one layer at a time and vacuum bag/autoclave cure. Prepreg is available commercially as tape or weave, or you can B-stage the resin yourself prior to layup. Your biggest challenge is ensuring the right amount of epoxy on your fibers (and the commercial product has already solved this problem.)

An example product can be found here: https://www.fibreglast.com/category/PrePreg_Fabrics

Typical recommendations apply: Design your layup, alternate plies to avoid edge stresses, account for thermal expansion, etc.

In volume or in sheet? What about fibres length&

Sir, I would like to fabricate composite BEAM with 60% fibre volume, using resin infusion.

How can I use 40% of matrix only. (is it possible to use exact amount of matrix in resin infusion?)

I will use harderner also

60% is a very high fiber volume for resin infusion (RTM, VARTM, etc.) It will be difficult to ensure complete wetting of fibers at low resin content. My suggestion would be to control the resin viscosity to aid flow. For example, wind turbine blades are often made using vinyl ester resin in a VARTM process. The styrene monomer acts as a diluent, reducing the viscosity. Traditional RTM takes advantage of the short-term drop in epoxy viscosity at higher temperatures (before gelation.)

In a traditional resin transfer molding process, it is not possible to control the amount of resin, because the mold must be filled to avoid air bubbles in the final product. Therefore, a traditional RTM process must control the mold volume and the reinforcement volume if the fiber volume target is important. A VARTM process has a vacuum bag instead, which is flexible. It may be possible to control the amount of resin, at the risk of incomplete wetting if the process is too lean.