Vinyl Trimethoxy Silane (YAC-V171, A-171, VTMO) Biggest Supplier on Organic Silane Coupling Agent from China YAC- ... -6300 (Dow-Corning), KBM-1003 (Shinetsu), A-171 (Momentive), Dynasylan VTMO (Evonik), Sila-Ace S-210 (Chisso)Formula: CH2=CHSi(OCH3 ... (YAC-V171, XL 10, Z-6300, KBM-1003, A-171, VTMO, S-210)