Dongguan Huashengyi Environmental Purifying Technology Co., Ltd. E-mail:sales@hsy-airfilter.comUpangAllen: sales01@hsy-airfilter.com E-mail:HSY_waimaobu@126.com Wechat at WhatsApp: +86 13266187584 (Allen) Whatsapp: +86 18985272474 Address: No.113 bagong anyuan road, dongcheng district, dongguan city, China.
