SDH is our trade mark, the products are of excellent material, in good finish, well mechanical property, good interchangeability and easy to be assembled, hence sdh brand is highly appreciated and well sold by our oversea customers. Our SDH brand products have been well exported to North America, south America, Australia, new Zealand, United Kingdom and Ireland. If our products are of interest to you, pls kindly inform us your detailed requirements so that we can check and give you a favourable price..