Established in 1999,we are a professional retractable dog leash factory in China.With professional engineers and experienced workers,we can ODM and OEM any dog leash.We were Sedex, Target,WCA,Costco,Costal,TUV audited.We have all kinds of in-house testing machines.We test spring lifetime,button lifetime,maximum pull weight,button pressure,retraction speed for each order.We produce for Petsmart,etc.