1. square manhole covers feature:

(1) Environmental protection: non-toxicity raw material

(2) Longevity: anti-corrosion, anti-rust, anti-abrasion, excellent anti-pressure capability;

(3) Competitive price: lower than stipulated standard cast iron one

(4) Light weight: 1/3 lighter than cast iron ones

(5) Nice appearance: rich colors available, whole material dying for long lasting

(6) Anti-theft: Non-recycle, anti-theft naturally

(7) Low noise: Harsh noise and rebounding free when car rolls

   2.  Applications

(1) Electric power pipeline well; post, telecommunication, communication pipeline well;

(2) Street lamp well, fire control well, all kinds of valve wells;

(3) City water, drainage pipeline well; heat supplied, gas well;

(4) As cover board for anti-corrosion project, open ditch; it as well as can be made according to customers requirements.