DEVELOPERS have bid aggressively for a 60-year leasehold industrial site at Yishun Avenue 6 (Parcel 1). Seven parties had expressed interest by the time the tender closed yesterday. OKH Management put in a top bid of $27.2 million, or $71 per square foot per plot ratio (psf ppr). The is 2.4 times the trigger price of $11.5 million, or $30 psf ppr, that an unnamed developer had committed to pay in...