The Most popular epoxy resins are either diglycidyl ethers of bisphenol A, and that is designed by reacting bisphenol A (BPA) with epichlorohydrin (ECH). the molecular bodyweight is managed by modifying the ratio of ECH to BPA; high ratios produce reduced molecular weights. Through the epoxy resin and amine response, https://www.propanraya.com/kategori/cat-lantai