祥興鑄鐵有限公司

Asia Development (HK) Limited, ADL, has been the leading importer and distributor in HKSAR specializing in supplying high quality piping products to the drainage and plumbing industries.

ADL is the sole authorized importer and distributor of Diamond Brand Cast Iron Pipes and Fittings in HKSAR. At the same time, ADL is the sole registered user of the registered trademark Diamond Brand in HKSAR.