Thinkertoy is totally develop by us and we are the only manufacturer in China, we have all the patents and pass lots of test because our quality is top class. Start NOW! 1. It will be a brand new product in your market, so it is full of competitive, only you have it, only you sell it! 2. If you going to be the sole agent in your country, we promise not sell to others from your country to protect you! 3. We can help your sell form everywhere we can tell and solve the questions in future, we will be your best partner!  Join us! NOW!