... ,7H,6H,5H,4H,3H,2H,H,HB,B,2B,3B,4B,5B,6B,7B,8B,9B,10B ... , Shangzhi Pearl Pencil Industry Co., Ltd. is a manufacturer and trader specializing in the research, development and production ... appreciated in a variety of different markets throughout the world.The company's new automated manufacturing line have ... business relationships with new clients around the world in the near future. B wooden black pencil