Neu du gas ma k lanh theo em thi xem xet tung bo phan nhu gian nong(tac gian, bui ban, quat gio k quay lam giai nhiet kem,...), gian lanh(bui ban, quat k quay gay dong bang,...), may nen yeu(nhieu nguyen nhan), phin loc tac, gas co hoi nuoc lam tac van tiet luu, thua nhieu dau lanh, ...e xin het...