About JenKem Technology

Founded in 2001, JenKem Technology is specialized exclusively in the development and manufacturing of high quality polyethylene glycol products and derivatives, and related custom PEG synthesis and PEGylation services. JenKem Technology caters to the PEG needs of the pharmaceutical, biotechnology, medical device, diagnostics, and chemical specialty markets, from laboratory scale through GMP commercial scale.AboutJenKemTianjin


Controlled manufacturing of polyethylene glycol (PEG) polymers with targeted molecular weights and functionality via the polymerization of ethylene oxide in 5kg, 15kg, 20kg, and 100kg batches, as needed, with annual capacity of over 10 metric tons of high quality raw PEGs.

Development and manufacture of a wide range of PEG derivatives in 1 gram to 40 kg or greater batches, under ISO 9001 and ISO 13485 certified Quality Management Systems, following ICH Q7A guidelines and operating under cGMP protocols for regulated customers.

Custom PEG synthesis of Y-Shaped PEGs, Methoxy PEGs, Homobifunctional PEGs, Heterobifunctional PEGs, Multi-arm PEGs, Multi-arm Heterobifunctional PEGs, Monodisperse (Discrete) PEGs, Biodegradable PEG Co-Polymers, and PEG GPC Standards.

Custom PEGylation of proteins, peptides, oligonucleotides, and small molecules; and conjugation of PEGs to other polymer systems.

Online ordering of catalog PEG products, and custom synthesis services at sales@jenkemusa.com. Global distribution of JenKem® PEG products available via collaboration with Merck: link.


JenKem Technology is a private company headquartered in Beijing, China. JenKem Technology’s GMP production facility and the R&D faicility are located in Tianjin, China; while the PEGylation facilities are located in Beijing, China and the PEG raw material production facility is located in Panjin, China. JenKem Technology USA, the international sales office of JenKem Technology, handles the sales of JenKem® PEGs and PEGylation services to all customers located outside mainland China.

JenKem Technology USA

JenKem Technology USA, founded in 2006, is located in the Dallas, Texas area. JenKem Technology USA is responsible for international sales of JenKem Technology’s PEG products and PEGylation services for customers outside mainland China.

JenKem Technology’s West Tianjin Production Facility JenKem_GMP_PEG_Synthesis

The West Tianjin PEG production facility of JenKem Technology is located in the established Tianjin Economic-Technological Development Area (TEDA):

  • A thriving area with globally recognized companies
  • Neighbors include: GSK, Novo Nordisk, Wuxi, and Novozymes

JenKem Technology’s Beijing R&D PEGylation Center and Headquarters

  • Located in New Northwest Territories Development Zone
  • Part of Zhongguancun Science Park
  • Surrounded by numerous international companies

Intellectual Property

  • JenKem Technology has patented several PEG product lines
  • JenKem Technology helps customers file DMFs with the US FDA and has the capability to file for patents worldwide to protect your interests

We warmly invite our customers to audit our facilities!