TD Ameritrade lists this for HPJ company profile:
Highpower International, Inc. is engaged in the production and sales of rechargeable nickel-metal hydride (Ni-MH) batteries, lithium batteries and battery systems. The Company also recycles scrap battery materials through outsourcing and resells the recycled materials to some of its customers. The Company's batteries fall into two main categories, such as consumer batteries and industrial batteries. The Company's consumer batteries category produces Ni-MH and lithium batteries, which offers power capacity, allowing for longer working time and shortened charging time during equivalent working periods. The Company produces A, AA and AAA sized batteries in blister packing, as well as chargers and battery packs. The Company's industrial batteries are designed for electric bikes, power tools and electric toys.