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
9th Floor, Workshop B, Guangdong Wadeli Elevator Co., Ltd., No. 19, Shengli West Road, Guicheng Street, Nanhai District, Foshan City, Foshan, Guangdong, China