Credential Verification of Chinese company

kindly help me to do Credential Verification of Chinese company -

Company Name: China Long Teng Chemical Co.,Ltd
Company Address: Wanhao Building ,Zhonghua Street
City/Provice: Shijiazhuang city, Hebei Provice
Country/Region: China
Postal Code: 050000
Tel: 0086-0311-80754599
Fax: 0086-0311-80754599
Contact person: Alice
Web: http://www.cnlt-chem.com
Email: Sales04@yida-industry.com
Hotmail: alice100406@hotmail.com
Skype: alice891004

we have received sample and price quotation from china food ingredient supplier.
We are planning to purchase from them very big quantity of the food ingredient