A GMP-certified veterinary API manufacturer in Yanshi City, Henan Province, focused on sulfonamides and quinolones.
Luoyang Zhengmu Biotechnology Co., Ltd. is located at Liuzhuang Village, Goushi Town, Yanshi City, Henan Province. As a professional veterinary drug manufacturer, Zhengmu has successfully certified to the GMP of veterinary drug.
Our business is deliberately narrow. We synthesise and purify two families of veterinary antibacterial APIs, sulfonamides and quinolones, plus the intermediates that feed them. Narrow scope is what makes consistency possible: the same routes, the same equipment and the same analytical methods run year after year, so a batch released in 2026 matches the validation dossier a customer filed years earlier.
The Zhengmu site in Yanshi City, Luoyang, Henan Province, where all sulfa and quinolone APIs are manufactured.
What we manufacture
The sulfa range covers Sulfadimidine, Sulfadimidine Sodium, Sulfadiazine, Sulfadiazine Sodium, Sulfaguanidine, Sulfamethoxazole Sodium, Diaveridine and Diaveridine HCl. The quinolone range covers Norfloxacin, Norfloxacin HCl, Norfloxacin Lactate, Norfloxacin Nicotinate and Pefloxacin Mesylate. Combined capacity is 1,000 tonnes of finished product per year.
Every product is released against the Chinese Veterinary Pharmacopoeia, the British Pharmacopoeia, the European Pharmacopoeia or the United States Pharmacopeia, depending on which standard the customer's registration uses.
Sulfonamides
Eight products including three sodium salts for water-soluble formulations.
Quinolones
Five fluoroquinolone APIs supplied as base, hydrochloride, lactate or nicotinate.
Intermediates
Key starting materials and advanced intermediates produced on the same synthesis lines.
How we manufacture
Our plants and facilities were designed and planned by a professional pharmaceutical production design company to GMP requirements. We own a number of production lines for the synthesis of APIs and intermediates. All production equipment is glass or stainless steel, and its selection and installation follow GMP requirements, so the lines can meet the production requirements of a variety of APIs.
The refining, drying and packing plant for APIs is a 300,000-grade clean plant. This is where the product stops being a chemical and becomes a pharmaceutical: crystallisation, centrifugation, drying and packing all happen inside controlled cleanliness, which is what protects the bioburden and particulate profile of the finished API.
How we test
The main analysis instruments are infrared and ultraviolet spectrophotometers, high performance liquid chromatography, gas chromatography, a thin layer analyser, an automatic titrator, a moisture analyser, an automatic melting point analyser, a pH analyser, an electronic analytical balance and a dust particle counter.
Because that instrumentation sits on site rather than in a contract lab, quality management can follow written operating procedures batch by batch. Assay, related substances, identity, loss on drying, heavy metals and residual solvents are determined before release, and the results travel with the shipment as a certificate of analysis.
How we work
Adhering to the principle of "quality first, customer first", and taking "scientific and technological innovation, casting first-class brand" as the direction of development, we hope to cooperate with customers in various forms to achieve common development.
In practice that means: a named contact for each account, specification review before the first order rather than after, change notification when a route or a raw material source moves, and audit access for customers who need to qualify us formally.
Request a specification sheet
Tell us the product, the pharmacopoeia and the volume. We will send the current specification, a sample certificate of analysis and pricing.
Professional manufacturer of Sulfadimidine, Sulfadimidine Sodium, Sulfadiazine, Sulfadiazine Sodium, Norfloxacin HCL, Norfloxacin Nicotinate, Norfloxacin...
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About Us
Luoyang Zhengmu Biotechnology Co., Ltd. is located at Liuzhuang Village, Goushi Town, Yanshi City, Henan Province. As a professional veterinary drug manufacturer, Zhengmu has successfully certificated to the GMP of veterinary drug. At present, our main sulfa products are: Sulfadimidine, Sulfadimidine Sodium, Sulfadiazine, Sulfadiazine Sodium, Diaveridine, Diaveridine HCL and so on; Quinolones are: Norfloxacin Nicotinic, Norfloxacin Hydrochloride, Norfloxacin Lactate, Pefloxacin Mesilate. We yearly can produce 1,000 tons of products, which are in accordance with the requirements of Chinese veterinary pharmacopoeia, BP, EP and USP standard, etc.
Our plants and facilities are designed and planned by a professional pharmaceutical production design company with GMP requirements: we own a number of production lines for the synthesis of APIs and intermediates; all production equipments are glass or stainless steel, and their selection and installation are in line with GMP requirements, can meet the production requirements of a variety of APIs. The refined bakery plant of APIs is a 300,000-level clean plant, and can satisfy the production requirements of various types of APIs.
The main analysis instruments are infrared spectrophotometer, ultraviolet spectrophotometer, high performance liquid chromatography, gas chromatography, thin layer analyzer, automatic titrator, moisture analyzer, automatic melting point analyzer, pH analyzer, electronic analysis Balance, dust particle counter and so on. Therefore, we are able to ensure that our quality management is in accordance with operating procedures and then produces quality products.
Adhering to the principle of "quality first, customer first" and taking "scientific and technological innovation, casting first-class brand" as the direction of development, we sincerely hope to have cooperation with customers in various forms got achieving common development and creating brilliant future!
