The Most well-liked epoxy resins are possibly diglycidyl ethers of bisphenol A, and that is developed by reacting bisphenol A (BPA) with epichlorohydrin (ECH). the molecular fat is controlled by adjusting the ratio of ECH to BPA; superior ratios make decreased molecular weights. However, it is vital to notice that https://www.propanraya.com/kategori/cat-lantai
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