kolkata: the haryana government will announce within a month a comprehensive policy to promote the biotechnology sector. "we are working on a comprehensive bio-tech policy and will announce it in a month. it will cover all aspects like intellectual property rights and patent laws," chief minister om prakash chautala said here today. chautala, on a day''s visit to kolkata, invited industrialists of the metropolis to invest in his state, which according to him had the most congenial atmosphere in the country. "we are the best state to invest in and have all amenities with no problem whatsoever like terrorism and labour unrest, the bane of many states," chautala told members of indian chamber of commerce here. "our policy is not to allow labour unrest affect industrial development, but at the same time we try to impress managements to look after the well-being of workers." he said efforts were being made to make haryana a progressive state and industrialists would be helped to start new projects. chautala said during the past three years, since he took over the reins of government, 4,500 large, medium and small industries had come up with an investment of over rs 1,900 crore, creating direct employment to over 40,000 persons.