Hangzhou Vast Ocean Industry Co., Ltd. is one of the leading supplier for electronics products ,our products include power bank, Speakers, headphone etc,Vast Ocean is specialized in the R&D, production and sale of products with high quality and competitive prices. With a long-term development strategy, rich experience and powerful R&D ability in the power bank field, we regard "Product Innovation and Quality Control" as our management concept.

All products from Vast Ocean must be strictly controlled under our quality system.

We believe that a professional...