A visit — yours or an inspector's — is the surest check on a new supplier. Send a date and what you want to see; the request reaches them as an enquiry you can track.
Address
Block B 4th Floor Building B Haoye Logistics Zone Shugang Tongdao Xixiang Jiedao Bao an District Shenzhen China 518126, Shenzhen, Guangdong, China, 518126