Dear Friend, We are a professional Silwet L-77 manufacturer in China. 1, Same quality to Momentive 2, 30%--40% cost of Momentive 3, We can adjust the formula according to your reuqests. Do you want a sample or trail order? Philip Senior Sales Manager Whatsapp/Wechat/Telegram/13661884561 Shanghai xiyi industrial co.,ltd, Enjinesilicone.co.,Ltd Company Address;1609room of No 200th Siping Road HongKou District Shanghai.China.