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 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 System, 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, small molecules, and conjugation of PEGs to other polymer systems.

Online ordering of catalog PEG products, and direct contact for custom orders at sales@jenkemusa.com. Global distribution via collaboration with Merck: link.


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

JenKem Technology USA

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

JenKem Technology’s West Tianjin Production Facility JenKem_GMP_PEG_Synthesis

The West Tianjin GMP 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 Pharm, and Novozymes

JenKem Technology’s East Tianjin Production Facility

The East Tianjin production facility was the original pilot plant for GMP production of JenKem Technology PEGs, currently serving as a back-up GMP facility.

JenKem Technology’s Beijing R&D Center and HeadquartersJenKem_Tianjin_East_PEG_Production

  • 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 you 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!