Glen are you are asking about Rizheng kits sold by other vendors or buying direct from them? Few of us do that, usually because of quantities and the fear of the unknown (direct from China) and the length of time between ordering and receiving the kits. Many of the vendors sell their kits but don't disclose it on their sites. So you don't know if the kit you like came from them or another Chinese company. Like many Chinese companies if the buyers demand the lowest price the product reflects it. When a buyer asks and pays for better quality the factory will make them and the same factory may provide both.