The government today approved the proposals of telecom giants Motorola and Foxconn, and Singapore-based realty major Ascendas to join as partners in the Special Economic Zones (SEZ) coming up near Chennai.The Board of Approval allowed six others to join as co-developers in SEZs that have already been notified. Besides, the Board gave approval to 30 zones to begin their operations, officials said.However, pending the resolution of crucial issues identified by the Empowered Group of Ministers, the Board did not take up any of the 600 pending new cases.US-based Motorola and Taiwan-based Foxconn will join the SEZ at Sriperumbadur near Chennai that has been promoted by state-owned SIPCOT. Ascendas is joining the Mahindra World City SEZ in Chennai.Petronet LNG will partner the Cochin Port Trust whereas Leela Lace Holdings would be the co-developer in Info Park SEZ in Kochi. Different companies of DLF and Mahindra group are joining as co-developers in SEZs promoted by their parents.Wipro, DLF, Ansal, Satyam, L&T, Zydus, FabCity and K Raheja are among the 30 SEZs which have been allowed to kick-off their operations.So far, the government has given final approval to 237 cases and in-principle clearances to 167 proposals. Apart from these around 300 applications are pending.