Qingdao Weijing Environmental Protection Technology Co., Ltd. is a modern and innovative enterprise with rich experience and expertise in the field of ventilation pipes.

Weijing ventilation system starts from a single accessory, we provide an infinite possibility to complete the whole ventilation system solution, and to do the installation is simple, economical and environmentally friendly. We can even provide only a few rivets, it is entirely up to the user to decide what level of business to hand over to us.

Our main product areas are circular piping systems and accessories, ventilation technology products and ventilation system installation services. Our piping systems are divided into plug-in installation and flange installation, and we can provide rubber ring seals according to customer needs. All designs reflect "shorter installation time, lower energy consumption and less air leakage". As a supplement to this product series, we also provide common plate flange air ducts and accessories; fan silent box, muffler, muffler elbow, muffler straight pipe, chimney hood, etc.

Vein's products are recyclable because they are easy to separate, rebuild or disassemble.