Hi Sir or Madam, I am Mars, I work for RayCell Battery, an experienced rechargeable Lithium battery manufacturer in Shenzhen China. I am glad to hear that you are a leading company in the market of lithium battery, and I am honor to introduce my company to you. We are specialized in custom manufacturing of lithium batteries as follows, with great price and fast delivery: ◎ Lithium-ion battery pack. Original 18650 li-ion cell with high security and high reliability design. PCB designing and verifying available. Custom voltage 3.2V(1S) to 72V(22S). OEM Service available. Soft pack, Plastic and metal out pack are available. ◎ Lithium polymer battery Free sample available Custom voltage 3.7V to 72V are available, with 3.7V max capacity 10000mAh. 1000+ ready models with minimum thickness 0.5mm, max 12mm. Round, Square or Curved are available, radian within 45°. If you have any inquiry, please feel free to contact me. For urgent, I am always Skype online. Rgs and Thanks. Mars Mail / Skype mars@ray-cell.com