Non-carcinogen incense

With pure combustion techniques and separating ces from the production process - Make the incense less smoke without the use of chemicals to reduce smoke like general incense - Non-benzene, benzodiazepines, butadiene, sulfur dioxide which is a carcinogen found in general incense - Does not cause the ceiling to become yellow stains Passed the test from the ISO / IEC 17025 environmental testing room that reduces carcinogens in incense smoke according to the requirements of the World Health Organization Retail, wholesale are welcome.