geometric ironing board cover_κάλυμμα τραπεζιού τραπεζαρίας

Encouraging Responsible Waste Disposal

The second stage is the end of the 1990s, China began to develop the standard of manhole covers, and began to promote the use of round cast iron manhole covers, and the shaft of the inspection well was transformed accordingly. Due to the good corrosion resistance of cast iron materials, a unified standard specification has been formulated. Therefore, a considerable part of this batch of inspection well covers is still in use.