LL 1007, plastic, specifically linear low density polyethylene, LLDPE abbreviation, is the contract of July 20 10.
PP 1006 refers to the polypropylene PP, the June 20 10 contract.
The previous code is named after the exchange where it is located.
You can go to Dalian Commodity Exchange, Zhengzhou Commodity Exchange and Shanghai Futures Exchange to see the specific products and codes of commodity futures trading and so on.