I-Guangzhou Tieying Spring Technology Co., Ltd. Ifowuni:008613929542670 https://www.youtube.com/@gasspringty8762 I-imeyile:tyi@tygasspring.com www.facebook.com/gasspring.ty/ Idilesi: Qiaoxing Guangzhu Road, Dongchong Town, Nansha District, Guangzhou, Guangdong, China