What quality control procedures (such as batch sampling, GC joint inspection) does Ascent Petrochem have for the production and export of specialty monomer IBOA?

Can the supplier provide halogen-free certification and third-party testing reports compliant with RoHS 2.0 requirements?

IBOA is highly sensitive to heat and light. Can the 200kg coated iron drums or IBC containers provided by the supplier guarantee a 12-month shelf life without color increase?

What is the regular stock status of IBOA for the Southeast Asian or European and American markets? What is the minimum lead time for bulk purchases?

Does the provided Certificate of Account (COA) include measured data for 'refractive index' and 'acid value' to ensure consistency with our experimental samples?

If we encounter incomplete curing issues when developing high-hardness coatings using IBOA, can the supplier's technical team provide formulation optimization suggestions?

What is the chemical structure of Hydroxyethyl Methacrylate (HEMA)? How do its hydroxyl functional groups enhance the polymer's hydrophilicity?

Why is Hydroxyethyl Methacrylate (HEMA) a core monomer in the manufacture of soft contact lenses (hydrogels)? How does it perform in terms of water content?