The Most popular epoxy resins are either diglycidyl ethers of bisphenol A, that's developed by reacting bisphenol A (BPA) with epichlorohydrin (ECH). the molecular body weight is controlled by modifying the ratio of ECH to BPA; higher ratios produce decrease molecular weights. In the epoxy resin and amine response, the https://www.propanraya.com/kategori/cat-lantai