I would suggest you to visit the factory to qualify it yourself. There are a lots molder in Shenzhen and Dongguan, it is difficult to say who is the best, but find the most suitatble supplier for your products.
We are the injection mold maker in Shenzhen China, we have 17 years experices on mold/tool/die making, production, we are the ISO9001:2000 certified manfuactory, we have our mold design engineer, mold tooling shop,injection shop, our machines are imported from Japan, Taiwan, Switzerland, 100% of our molds and products are export to Europe and America countries, and also Japan.
You are welcome to visit us or RFQ.