https://www.facebook.com/asianprimegroup/ By Cecilia Chow / EdgeProp Singapore | March 6, 2020 1:21 PM SGT SINGAPORE (EDGEPROP) - With the sale of the fourth penthouse at Wallich Residence hitting an all-time high of $4,987 psf this January, GuocoLand is looking to set a new benchmark of $5,300 psf with the final penthouse now on the market. At Wallich Residence, the tallest skyscraper in...