Hebei Qinghe County Dezheng Auto Parts Co., Ltd. : automotive applicationsIt is mainly connected with engine and air filter, engine and radiator system, automobile air condit....

2021-01-27View+

Hebei Qinghe Dezheng Auto Parts Co., Ltd. : Test Standard for Automotive Rubber Hues (5)9. Cleanliness and extraction test: the fuel hose is usually injected with liquid C into the hose, a....

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Hebei Qinghe Dezheng Auto Parts Co., Ltd. : Test Standard for Automotive Rubber Hues (4)8, volume expansion test: the hose should not produce obvious volume change under the pressure of th....

2021-01-27View+