Refined from coking crude phenol, it is an isomer of cresol. M-cresol can be used to synthesize a variety of new fine chemicals, including pesticides, medicines, resins, perfumes, etc. In the pharmaceutical industry, such as in vitamin synthesis, it not only requires the high purity of m-cresol, but also requires the control of specific impurities at the trace level. Anhui Fulltime self-developed purification technology is able to produce m-cresol with high purity and can control the sulfur content in products to less than 0.5 ppm or much lower.