Wai Ming Metal Manufacturer Ltd.

Hong Kong based Wai Ming Metal Manufacturer Ltd. operates as a hardware component supplier. The company currently lists 24 active products in its online catalogue. Its product portfolio spans door locks, car accessories, door closers/openers, locks & handles, and brass hardware. The catalogue includes multiple smart digital door lock models classified under HS code 8301.40, as well as brass key blanks under HS code 8301.70 and door opener items under HS codes 8302.41 and 7419.99. Materials are specified as aluminum alloy, zinc alloy, brass alloys, stainless steel, and various polymer components. No additional company history or financial data is provided.

The smart digital lock series (ST1, ST2, ST3, ST20) feature zinc or aluminum alloy housings combined with stainless steel deadbolts and electronic circuit boards. Brass key blanks are offered in several pattern series, with alloy compositions typically containing 58‑62 % copper and 35‑40 % zinc. Door opener products include a touch‑activated brass model (HS 8302.41) and a non‑touch variant classified under HS 7419.99. Additional items such as brass single‑bit blanks and various decorative key blanks complete the range. All items are grouped under the HS chapters 8301 (locks and keys), 8302 (door openers) and 7419 (other articles of base metal).

The catalogue lists four smart digital door lock families - ST1, ST2, ST3 and ST20 - each built with zinc or aluminum alloy housings, stainless steel deadbolts and electronic circuitry. In the locking hardware sector, digital locks are commonly tested to EN 1303 (electronic locks) and ISO 9001 quality management standards, with battery life and IP‑rated water resistance as key specifications. Brass key blanks are supplied in patterns such as Ks1, Kw1, Ul050, Lw4 and custom designs; industry practice grades these blanks to BS 3621 or DIN 65924, with typical alloy designations of CuZn36 (approximately 63 % Cu, 37 % Zn). Door openers made of brass are often finished with chrome plating or brushed nickel, and torque ratings of 8 - 12 Nm are typical for commercial door hardware. The product mix reflects standard material grades - zinc alloy (Zn % ≈ 60), brass alloy (Cu % ≈ 58‑62), stainless steel (AISI 304) and engineering plastics (ABS, acrylic) - that align with global hardware specifications.