JIS UPVC Reducer Coupling Factory: JIS UPVC Plastic Reducer Couplings, 20A*16A - 50A*40A, UPVC Material, JIS Standard.
DIN PPH Reducer Coupling Provider: PPH Pipe Reducer Couplings, Butt-welding Ends, DIN Standard, PPH, 25 x 20 mm - 63 x 50 mm.
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