Hello, I am the manufacturer of injection grade sodium hyaluronate gel. About our non cross linked medical hyaluronic acid gel,we have three kinds,they are for ophthalmology,Injection for the treatment of osteoarthritis ,Viscoelastic solution for surgery.   I am very glad to give you more details of my products. I have confident you will love it after the trial order, thank you. if you are interested in it,pls feel free to contact me