Superpower has 20 years experience in global brand registration and brand management, well known supplier which are currently selling Stump Grinder with our own brand all over the world. Our R & D team will also continue hard work and develop more value-for-price products according to customers’ demand. OEM/ODM Stump Grinder. You can also Wholesale these direct from us. Strategic vendor relationship with major retailers. Stump Grinder Suppliers in China.