Dongguan Huashengyi Environmental Purifying Technology Co., Ltd. អ៊ីមែល៖sales@hsy-airfilter.comទៅអាឡែន៖ sales01@hsy-airfilter.com អ៊ីមែល៖HSY_waimaobu@126.com Wechat & WhatsApp៖ +86 13266187584 (Allen) Whatsapp៖ +86 18985272474 អាស័យដ្ឋាន៖ No.113 new anyuan road, Dongcheng, Dongguan City, China.