Provide full range of services for customers from product research 、production、delivery and after-sales.
Dedicated to to provide quality products and perfect service for domestic and foreign customers
Fast、Accurate、Thoughtful、Thorough
7*24 hours to customize programs and services for you.
Solutions within 24 hours.
Win customer satisfaction by service quality
Nantong Guanyouda
Suzhou Guanda
Nantong Sanjia Magnet
Nantong Sanyoujia
Shanghai Marketing Center
South Korea office
Dongguan office
Contact：Mr.Dai
Tel：0513-80688688
E-Mail : guanyouda@gydcore.com
Add：29 Tongyang Road, Hai 'an City, Nantong City, Jiangsu ProvinceRoute Navigation
Contact：Mr.Dai
Tel：0513-80688688
E-mail：guanyouda@gydcore.com
Add：29 Tongyang Road, Hai 'an City, Nantong City, Jiangsu Province
Contact：Ms.xiao
Tel：18934559028、15162561211、0512-52379048,52379028
E-Mail : guanda@gydcore.com
Add：No.100 Miaohong Road, Miaoquan Industrial Park, GuliTown, Changshu City, Jiangsu Province
Contact：Mr.Liu
Tel：0513-68879206 18862706399
E-mail：sanjia@gydcore.com
Add：Group 2,Chengang Village, High-tech DevelopmentZone, Haian City, Jiangsu Province
Contact：Mr.Liu
Tel：0513-68879206 18862706399
E-mail：sanyouiia@gydcore.com
Add：318 West Road Huanghai Avenue, Hai 'an City, JiangsuProvince
Contact：Mr.Bao
Tel：+86-13641931979
E-mail：bcf@gydcore.com
Add：Room 2710, No.1403, Minsheng Road, Pudong New Area, Shanghai
Contact：Li Rongyu
Tel：+86-13506302869(China) 、 +82-010 4010 0478(Korea)
E-mail：younglwoo@hanmail.net
Add：262 Jangan-ro,Jangan-gu, Suwon, Gyeonggi Province601-1(DONG WOO BUILDING, Jeongjae-dong)
Contact：Mr.Hu
Tel：0512-52379028
E-mail：guanda@gydcore.com
Add：No.240, Zone 3, Zhongwei Road, Tiesong Village.Qingxi Town, Dongguan City
