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Hongkong Royce Metal Products Co., Ltd.
E-mail: [email protected]
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of 30-minute construction noise measurements were carried out at each of Leq (30min) were used as the monitoring parameter for the time period in Leq(30mins), dB(A) Remark NM2, NM6 When one documented complaint is received
Royce steel gratings can meet ASTM, AS, BS, DIN, EN, GOST standard . We can design non-standard steel grating according to the sketches and drawings. In addition, if you are not satisfied with the products received, we also have perfect after-sales service.
Unit A1, 7/F, Cheuk Nang Plaza,250 Hennessy Road, Wanchai, Hong Kong
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