Eprinomectin was developed as a topical endectocide for all categories of cattle including lactating dairy cattle, and the process by which eprinomectin was selected for further development has been described (90). Briefly, several hundred avermectin/ milbemycin analogues were screened in a sheep model for efficacy against a range of endoparasites and in lactating dairy cows for a low milk:plasma partitioning ratio. Themilk:plasma ratio for eprinomectin is <0.2; ivermectin, by comparison, partitions equally between milk and plasma

Hebei Veyong pharmaceutical Co., Ltd, was established in 2002, located in Shijiazhuang City, Hebei Province, China, next to the Capital Beijing. She is a large GMPcertified veterinary drug enterprise, with R&D, production and sales of veterinary APIs, preparations, premixed feeds and feed additives. As Provincial Technical Center, Veyong has established an innovated R&D system for new veterinary drug, and is the nationally known technological innovationbased veterinary enterprise, there are 65 technical professionals. Veyong has two production bases: Shijiazhuang and Ordos, of which the Shijiazhuang base covers an area of 78,706 m2, with 13 API products including Ivermectin, Eprinomectin, Tiamulin Fumarate, Oxytetracycline hydrochloride ects, and 12 preparation production lines including injection, oral solution, powder, premix, bolus, pesticides and disinfectant, ects. Veyong provides APIs, more than 100 ownlabel preparations, and OEM & ODM service.

Veyong attaches great importance to the management of EHS(Environment, Health& Safety) system, and obtained the ISO14001 and OHSAS18001 certificates. Veyong has been listed in the strategic emerging industrial enterprises in Hebei Province and can ensure the continuous supply of products.
Veyong established the complete quality management system, obtained the ISO9001 certificate, China GMP certificate, Australia APVMA GMP certificate, Ethiopia GMP certificate, Ivermectin CEP certificate, and passed US FDA inspection. Veyong has professional team of registeration, sales and technical service, our company has gained reliance and support from numerous customers by excellent product quality, high-quality pre-sales and after-sales service, serious and scientific managemen. Veyong has made long term cooperation with many internationally known animal pharmaceutical enterprises with products exported to the Europe, South America, Middle East, Africa, Asia, etc. more than 60 countries and regions. 
 

Veyong takes "Maintain animal health, improve quality of life" as the mission, strives to become the most valuable veterinary drug brand, and looks forward to active cooperation with global customers.