Hello Sir or Madam As knowing that you are in the lithium battery industry. Mars from Renerge China in Shenzhen, writing to establish business relationship with you. The company is an origin high energy lithium battery manufacturer since 2011, with TUV audited and UL, FC, TUV, PSE, UN38.3 certified. Our products involved in customizing: 1. High energy Lithium-ion battery pack. 2. Lithium polymer battery They're widely used in the electric industry, and would be a great promote to your business. Please don't hesitate to contact me if there is any need. Have a great day. Mars Phone and WhatsApp: +86 13632677349