Dupleluck is a brand of Gainjoys Technology (Shenyang) Co., Ltd.
Gainjoys is a fast growing company, which is specializing in manufacturing, R&D, OEM, ODM, wholesaling, retailing and export of Solar panels, MPPT solar controllers, Home energy storage system, Portable energy storage battery, Power battery, DC-AC inverter, Battery packaging equipment and Battery testing devices etc.
We believe that Quality is the existence foundation of an enterprise, and the whole company insists on only supplying products with reliable quality. Gainjoys has highly qualified by many international governmental institutions such as CE, ISO, UL etc. Our products have been exported to over 50 countries, Including USA, Canada, European Countries, Japan, Korea and South America etc. Gainjoys has established strict supplier assessment procedure to guarantee that we are only working with reliable supplier and products stable supplying. For all the products we supply, we are not only doing random product inspections after final packaging, but also providing complete after-sales service to make sure our customers won't bear any unexpected loss during cooperation with us, based on which Gainjoys’ products are exported to more than 50 Countries and enjoy great reputation all over the world.
Depending on reputable credit and excellent service,Gainjoys has established good and reliable business relationships with many famous companies all over the world. Our goal is to develop together with our partners and our global customers through our professional service.
Come on! Welcome to join us and hope to achieve greater success together with you!