Contact Imprint Company: Corporate About HAL Allergies Products R&D Careers News In 2009 HAL Allergy moved to the Bio Science Park in Leiden State of the art production facilities In 1959 HAL Allergy started its business in a small laboratory in the centre of Haarlem, The Netherlands. The first allergen extracts were manufactured with simple equipment, this entailed a lot of manual labour, but it was also ingenious and extremely inventive at that time. When the company grew to a mid-sized production company, the activities were moved to a bigger building also situated in Haarlem. In 2009 the then 50-year old company took a major step forward and moved to the Bio Science Park in Leiden. The architecture of the site changed herewith from a fifties/sixties housing to a modern state-of-the-art production facility. In terms of technology, cutting-edge equipment was installed and the laboratory currently utilizes advanced equipment which was especially designed to fit the contours of the new building. All this allows HAL Allergy to further improve its future growth demands and continue on its mission to improve the quality of life of our patients by providing biopharmaceutical products for causal treatment. The 3.000 sqm production and 2.700 sqm office and laboratory facilities were opened and fully operational in 2009. HAL Allergy Group J.H. Oortweg 15-17 2333 CH Leiden The Netherlands Tel: +31 (88) 1959 000 Fax: +31 (88) 1959 001 e-Mail © HAL Allergy Group, 2017 ∙ All rights reserved About HAL Our Strategy Businesses International Production Responsibility Management Allergies Causes of Allergies Clinical Conditions Immune System Diagnosis Insights Products SCIT SLIT Diagnostic R&D Clinical Trials Product Pipeline Product Quality Scientific Advisory Board Careers Working at HAL Vacancies Process News Contact Imprint Terms of use Privacy Statement General Conditions