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ble pumps, BQS series of desilting pumps, BQW series of sewage pumps, (2.2kw-4,000 kw), GLD type belt feeder series, GLZ type vibrating feeder series, KBSGZY series of mining flameproof type mobile substations, KBSG series of mining flame-proof dry-type transformers and KBSG series of dry-type substations for mining flameproof mobile substations. All the above products have passed the test of the National Anti-explosion Detection Center and the Safety Mark Test and obtained related certificates.