I was very impressed by Shenzhen Tongjin Company. Their representative, Jack Len was very helpful. Communication was excellent and fast. Very knowledgeable about the product, the materials, the modifications, price negotiation. Price: I really liked the price, as it was the lowest of the competitors, and they promised faster delivery of the sample and mass shipment. Quality: When I received the sample, I was more than pleased. It was more than I expected. Very well-made product. It matched my specifications to a T. Material: High quality material, going above and beyond regarding each component of the product. I will definitely continue to do business with them, as they are a top notch company.