The entire series features three-dimensional adjustable precision-cast stainless steel hinges, with fully functional screws that allow for four-directional adjustments. Each hinge supports a load capacity of 160-200 kg and is tested for 200,000 cycles of opening and closing. The system ensures exceptional stability and durability, with the door leaf remaining securely fixed and maintaining optimal performance for decades. The hinges are crafted with precision, offering smooth operation with opening angles ranging from 130° to 165°, all while remaining concealed within the door frame for a sleek, elegant appearance.