Someone knows this companies?

I need help from any one who knows about this both companies that have web pages in Alibaba and ouw pages we are attemting to make business :
Shenzhen PGD Digital Technology Ltd
Anlong International Group Limited

Add: 4th Floor, Building 4, Hou Shan Industrial Area, Shui Dou
Village, Longhua street, Bao'an, Shenzhen, China
Mobile: (86)13715226416
Fax: (86) 755 83520448
Skype: PGD613
MSN: cena216@hotmail.com
Email: sales03@andalong.com
Web: www.gpstrackerwatches.com or www.china-msd.com

And


Best regards,
Cherish Chen
Learn from yesterday,live for today,hope for tomorrow!
MOSTHINK HOLDINGS CO., LIMITED

E-mail: cherish@cwell-hk.com
MSN: cwell015@hotmail.com
SKYPE: cwell015
Gmail: cwellhk015@gmail.com
websites:
CWELL | Mobile Phone&Tablet PC
www.cwell-hk.com
http://mosthink.en.alibaba.com/
www.aliexpress.com/store/800068

MOSTHINK | Audio&Video | Promotional Gifts | Cellphone Accessories
www.mosthink.com