Rail-Type Heat Treatment Base Tray | Custom Furnace Bottom Tray Manufacturer – FH® Heavy-Duty Heat Treatment Base Tray for Industrial Furnace Loading FH® (Wuxi Junteng Fanghu Alloy Technology Co., Ltd.) manufactures custom heat treatment base trays for industrial furnace loading and material handling systems. The rail-type base tray shown here features an open-grid structure with reinforced ribs and longitudinal support sections, designed to provide stable support for