It is estimated that the shrimp processing industry has more than 150 freezing plants, and 50 canning plants. The main processing exporting companies include CP, Thai Union, Marine Gold and Thai Royal. According to the EU list of approved establishments, there are 130 plants EU approved for aquaculture exports. The main processing areas are Samut Sakhon, Trat, Surat Thani and Samut Songkhram. The Thai processing industry was one of the first to specialize in value added products. However, as the EMS outbreak dramatically reduced the supply of raw material, the the Thai processing industry has been surpassed by countries like Vietnam.