Ụgwọ nke ụlọ ọrụ Dongguan Huashengyi Environmental Purifying Technology Co., Ltd. Email:sales@hsy-airfilter.comIjiAllen: sales01@hsy-airfilter.com Email:HSY_waimaobu@126.com Wechat & WhatsApp: +86 13266187584 (Allen) Whatsapp: +86 18985272474 Adreesị: No.113 new anyuan road, dongcheng district, dongguan city, China.