Dongguan Huashengyi Environmental Purifying Technology Co., Ltd. E-post:sales@hsy-airfilter.comTilAllen: sales01@hsy-airfilter.com E-post:HSY_waimaobu@126.com Wechat og WhatsApp: +86 13266187584 (Allen) Whatsapp: +86 18985272474 Adresse: No.113 new anyuan road, dongcheng-distriktet, dongguan city, Kina.