Dear Manager, Have a nice day ! We are a professional manufacturer and exporter which specialized in this field for many years. Our main products are as follow: 1. Barium carbonate 2 Soda ash 3. Silicon dioxide If you have any interest to our products, please contact us timely and freely. We are looking forward to your inquiries. Thanks and Best regards Victoria Please do me a favor that send this email to the purchasing department. Thanks for your help.