Our products come with reliable quality assurance and are guaranteed against damage for 5 years nationwide. Our company shall provide full compensation if any property damage is caused by quality defects of our products.

We remind all customers to verify the legitimacy of manufacturers before purchasing products from other suppliers. Please check whether the manufacturer is capable of compensation. Confirm if the company only holds a business license registered in Changchun. Watch out for products actually manufactured by exhaust‑valve factories in Renqiu yet falsely labelled as Changchun origin. Check whether the supplier is merely a private workshop.

Products from such manufacturers cannot guarantee stable quality and may lead to economic losses. Please purchase with caution!

Zhongquan automatic air vent valves have been awarded honorable titles including Jilin Famous Brand and Premium‑Quality Product of Jilin, China! If you are looking for a high‑performance valve for automatic air discharge, choose Zhongquan!