Guangzhou Tieying Spring Technology Co., Ltd. Tillefoan:008613929542670 Whatsapp: 008613926165698 E-post:tyi@tygasspring.com E-post:tyg@tygasspring.com Adres: Qiaoxing Guangzhu Road, Dongchong Town, Nansha District, Guangzhou, Guangdong, Sina