Truong Thang applies kiln drying, engineered lamination, and protective coatings to limit warping, shrinkage, and surface damage caused by humidity and temperature changes. With proper care and maintenance, the average lifespan of wooden doors at Truong Thang is typically 20 to 30 years. Keep indoor humidity stable, clean with a soft cloth, avoid harsh chemicals, and check hardware periodically to maintain performance and appearance.