This is an old ad of Zolone that draw attention to Phosalone - An important pesticide for crop protection. It says
In the development of Patancheru
A Company promoted by Voltas in collaboration with Rhone-Poulenc of France. The aim is to up a plant for the manufacture of a wide range of chemicals commencing with the important pesticide for crop protection -- Phosalone. The formulated product, is ZOLONE, is already being used widely and effectively in India.
In line with Government's policy, a notified backward area was chosen for the site and the location is at Patancheru, Medak District. ANDHRA PRADESH. Various factors contributed towards this decision, one of which was the co-operation and assistance from the Andhra Pradesh State Government organizations, and VOLRHO is looking ahead with confidence to operating in a State where industrial development is being encouraged. VOLRHO was amongst to see that many other new projects are also coming up in this area, thereby providing employment opportunities.