Comprehensive floor plan for Buildings #3 and #4 of teh Nantong Erxin Wood Industry facility. The layout depicts a woodworking production facility with clearly defined manufacturing zones, machinery placement, and workflow organization. The design features a grid-based column structure with standardized spacing for efficient equipment arrangement. Key production equipment includes single blade saws, pneumatic cutting saws, double-end milling machines, sanding equipment, and CNC machining centers positioned for optimal material flow. Support spaces include small electrical rooms, restrooms, and stairways marked with appropriate egress symbols. The facility incorporates concrete aprons (600mm wide) around the perimeter with 5% outward slopes per standard J01-2005. Building features include a freight elevator for vertical material transport between floors. Scale is 1:100, with all dimensions provided in millimeters according to Chinese architectural standards.