LONDON—Leading consumers of natural rubber, including major tire and gloves companies, have significant gaps in terms of sustainability reporting, according to recent research by the conservation charity The Zoological Society London (ZSL).
In a review of 30 companies, ZSL found that 62 percent of companies had a "clear public commitment" to zero-deforestation.
Only 10 percent (three companies), however, publicly reported "some evidence of monitoring deforestation and/or ecosystem conservation in supplier operations," said the study, published March 1.
The report, which used companies' openly available sustainability transparency data, also revealed that rubber manufacturers scored higher than producers and processors, with an average of 42 percent compared to 37 percent.
Michelin, assessed as a producer, processor and manufacturer of natural rubber, scored highest of all with nearly 82 percent.