Esschem enjoys a global network of 'Principals' which till today remains core to the company's worldwide diversified effort, ensuring the stability and continuity desired by the customers in foreign suppliers. The company's first 'Principals' Recordati, Italy and Fermic, Mexico (formerly Proter Italy) and C. J. Corp, Korea (formerly Cheil Sugar) are still there since the 1980s.

Outsourcing And Custom Synthesis is an important part of the company's business. Esschem's long-standing and deep-rooted continuity of international business associations facilitates co-operation between the Principals and the clients. Its poignant understanding of the industry helps to provide clients with the right partners for specific custom synthesis projects, while maintaining total confidentiality.

	Amino Chemical ltd, Malta
	AMSA S.p.A.
	Bioindustria L.I.M. S.p.A., Italy
	CJ Corp., Korea
	Cambrex
	Chemi S.p.A., Italy
	Dipharma S.p.A. / Dipharma Francis S.p.A., Italy
	Daito Corporation, Japan
	Damor Farmaceutici S.P.A., Italy
	Ercros Industrial S.A. (Fyse), Spain
	Fabbrica Italiana Sintetici
	Farchemia , Italy
	Fermic, s.a.de c.v, Mexico
	Fidia Farmaceutici, S.p.A.
	Hengdian Group, China
	Industria Chimica S.r.L, Italy
	Jiangxi Dongfeng Pharmaceutical Co. Ltd., China
	Laboratorio Chimico Internazionale S.P.A., Italy
	Maprimed S.A., Argentina
	Moehs Iberica S.L., Spain
	Poli Industria Chimica S.P.A., Italy
	Quimica Sintetica S.A., Spain
	Recordati S.p.A., Italy
	Solmag S.p.A.
	Urquima S.A., Spain
	Zhejiang Jingxin Pharma Co. Ltd., China
	Zhejiang Sanmen East-Asia Pharmaceutical Co. Ltd., China
	AND OTHERS...