If you want to apply for sample, please send us the product model
Phone :+86-13691912766
+86-17704005219
E-mail :sales@trolink.cn
Skype:sammilauyan
WhatsApp:8613691912766
Factory address::2nd Floor, Building B, Shijie, District A, Huafeng First Science Park, Gushu Sanwei, Bao'an District, Shenzhen