25 varieties. There are 25 kinds of Huaxia floor options * * *, and there are 5 options with stocks and indexes as the targets, namely Huaxia SSE 50ETF option, Huatai Bairui CSI 300ETF option, Harvest CSI 300ETF option, CSI 300 stock index option and CSI 1000 index option. There are 20 options based on commodity futures, namely cotton option, sugar option, rapeseed meal option, PTA option, methanol option, thermal coal option, soybean meal option, corn option, iron ore option, liquefied petroleum gas option, polyethylene option, PVC option, polypropylene option, palm oil option, crude oil option, gold option, aluminum option, copper option, zinc option and rubber option.