The major industries in the Lucknow urban agglomeration include aeronautics, automotive, machine tools, distillery chemicals, furniture and Chikan embroidery. Lucknow is among the top cities of India by GDP. It is a centre for research and development as home to the R&D centres of the National Milk Grid of the National Dairy Development Board, the Central Institute of Medical and Aromatic Plants, the National Handloom Development Corporation and U.P. Export Corporation. Lucknow is ranked sixth in a list of the ten fastest growing job-creating cities in India according to a study conducted by Assocham Placement Pattern, Lucknow's economy was formerly based on the tertiary sector and the majority of the workforce were employed as government servants.