Dalian Hairun Marine Technical Co., Ltd. is based in Dalian, the major Liaoning Province port on the Liaodong Peninsula that hosts container, crude-oil and bulk terminal complexes at Dayaowan, Dagushan and Xinggang and a long-established cluster of ship-repair, marine-electronics and survey-attendance firms serving Bohai Bay and Yellow Sea trading lanes. The firm provides on-board technical attendance covering radio-survey and non-destructive testing scopes for commercial vessels calling Dalian-area berths and the surrounding anchorages used for crew change, bunkering and routine maintenance during ordinary commercial calls. Radio-survey services cover GMDSS annual testing on MF/HF and VHF radio installations, EPIRBs, SARTs and NAVTEX receivers, with battery load tests, antenna checks and operational verification performed in accordance with SOLAS chapter IV requirements and the relevant ITU regulations. Additional radio scopes cover GMDSS equipment maintenance, AIS annual inspection and verification of static and dynamic data on shipborne installations. Non-destructive testing techniques cover ultrasonic, magnetic-particle, dye-penetrant and visual examination of welds and structural members performed by qualified Level II technicians on hull, deck and tank structures during repair attendance and periodical inspection. Hairun holds service supplier recognition by the China Classification Society, allowing inspection and test records to be considered during periodical, intermediate and special surveys on commercial tonnage attended at Dalian Xinggang and Dagushan terminals and the surrounding Bohai Bay anchorages. Customers include shipowners, ship managers and surveyors requiring objective, documented radio-survey and NDT evidence on commercial tonnage in the Liaoning trading area. Field teams attend at berth and anchorage with calibrated test gauges, GMDSS bench equipment and NDT instruments, supporting routine renewals and short-stay maintenance during commercial port calls.
