ortho toludiamine is the by product of TDI. We need this product as raw material,the purity is 99.0%min,If you can serve this product,please feel free to contact me. Our demand is 300MT-500MT/month,we are the end user of this product.We use it to produce our own chemical product tolyltriazole. If you have this product,pls feel free to contact me. jenny Tel:0086-13914726118 msn and E-mail:jinlingbest & hotmail.com QQ:109404645 wechat:13914726118 whatApp:13914726118 Show More