Good evening, I am with a company called Keystone Spring & Brake in Pittsburgh Pennsylvania. We have been in business since 1973. We are looking for pricing & availibility on container loads of 4707, 4709 (ES2) & 4515 brake shoe cores. Samples will be needed if pricing is agreed upon. We have purchased drums and other products from China in the past, we are fimiliar with procedures. We are looking for a good working long term relationship. Please keep me advised. Regards, Jason Valant