What We Supply: Power Banks Who Is Our Partner: Samsung,Lenovo,China Mobile,China Unicom,Bank of China,HP,Syntech,Prestigio... Why choose ROMOSS? 1,20Million PCS annual sales,Top 1 in China(so we have the best price based on the same quality) 2,CE FCC ROHS MSDS 1.2M Drop Test Report,SGS(No custom clearance problem ) 3,Own factory and subsidiary factories(Large production capacity) 4,R&D:192 design patents;12 patents of invention;77 utility patents;19PCT;CESI What about our Power Banks? 1,Fit Charge Technology:Automatically adjust voltage without damaging connected device 2,Smart Chip:Adjust the output current--safety 3,Etching technology:dedicate surface,pay attention to detail(our Ace series is using the same surface technology as MacBook Pro) 4,Sandblasting:Sweat-proof+Finger-proof=clean and fresh 5,Complied with Aviation standards:both air and sea transportation report 6,Our fast charger model are compatible with QC2.0/3.0,Samsung AFC,VOOC...(Follow the trends of mobile phone technology) 7,Strict quality control:temperature testing,battery lifespan testing;battery performance testing;battery burn-in testing;damage resistance testing--using top brand battery material What our customers say? One of the best I ever have used/5 stars reviews/Very good and innovative