Fish pond tarpaulin is made by high strength polyester with PVC coating on both sides. It is waterproof, UV resistant, mildew proof. 
The fish pond tarpaulin material is also RoSH and REACH compliant, heavy metal free and phthalates free. The base fabric is 1000D 30x30 panama weave polyester fabric, it make the tarpaulin with higher strength. This kind of tarpaulin can used to make larger than 1000 cubic meters tank.
DERFLEX is one of the leading 900gsm fish pond tarpaulin manufacturers in China 20 years. If you have more interest, please contact me at:
Email: steven@derflex.com
M.P.: +86 15601786499 (WhatsApp & WeChat)
RESPONSE in half an hour during working hours