Carbon residue of this indicator is the most important indicator of HTF. It refers to: barrier air under the conditions of heating oil, is completely evaporated, the amount of coke residue after combustion formed, expressed as a percentage by weight. Most of the new international regulations HTF mass fraction of less than or equal to 0.05%. When production HTF HTF suppliers, as long as you choose the appropriate application HTF base oil, carbon residue usually qualified HTF models, this is not too technical content of thing. We should not change the key on too much focus on new carbon residue oil, but should be placed HTF carbon residue after use changes in the number and the state of residual carbon, is the problem. HTF GB GB23971-2009 there are two, one is thermal oxidation stability determination Appendix C on HTF quality changes in the course of, and the other is the thermal stability of the GB / T 23800, these two test methods oil heating process changes on carbon residue indicators did not play its due role in the forward-looking herald. Especially thermal oxidation stability HTF, at 175 ℃ * 72h later, also allowed residue 50mg / 100g of existence, we think this is unreasonable, this allows the residue is present in the formation of carbon residue and sludge matrix. HTF Production | Fengqiu County Taihang Chemical (certified) | Ganzhou HTF provided by Fengqiu County Taihang Chemical Co., Ltd. Fengqiu County Taihang Chemical Co., Ltd. (www.hndaoreyou.com) Henan Xinxiang, fuel oil leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Fengqiu County Taihang Chemical Co. led the staff warmly welcome all inquiries negotiations to create Fengqiu County Taihang Chemical Co., a better future.