Greenpeace Southeast Asia (GSA) surveyed 14 canned tuna firms in Thailand and said it found the processing of the canned products failed to meet traceability, sustainability and equity standards, reported The Bangkok Post.
GSA sent questionnaires to canned tuna manufacturing companies.
Thailand has more than 50 tuna processing plants but the questionnaire was sent to only 14 companies, and of them, only 10 filled it out.
Greenpeace gave the four firms which refused to fill the questionnaire an automatic fail.
The group released the From Sea to Can: Thailand Canned Tuna Ranking report Sept 29, which evaluated the production procedures of 14 brands of canned tuna sold in Thailand.
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