2. All pipe fittings are printed with the word A instead of < < A >；; Writing character model

3. All pipe fittings must be brass. (Because of EU regulations; Electroplating is absolutely not allowed for the metal of drinking water delivery pipe fittings at the entrance, because electroplating contains carcinogens. ) If it is not brass, it must be a fake German Kuosheng. Try to put a bright flashlight into the PPR pipe and push it back and forth. If light transmission is found, it means that the quality of PPR products is definitely not high. If there is no light, the product quality is better.