Dongguan Huashengyi Environmental Purifying Technology Co., Ltd. E-mail:sales@hsy-airfilter.comLaAllen: sales01@hsy-airfilter.com E-mail:HSY_waimaobu@126.com Wechat și WhatsApp: +86 13266187584 (Allen) Whatsapp: +86 18985272474 Adresă: No.113 nou drum anyuan, districtul dongcheng, orașul dongguan, China.