Rational design of mold covers the relationship between the security of millions of households. The old covers mold design, there are many shortcomings, such as covers many issues such as theft, pedestrian injuries and even lost their lives fall into these problems have been plaguing the government. And our latest design of new anti-theft feature covers steel mold, where there are good plastic covers mold, durable, plastic covers mold size, difficult to corrosion features widely favored customers. According to statistics, the general population of a city of 500,000, rainwater grate, there are covers amount up to 25 million units, Shandong plastic covers mold, mold covers the annual demand of about 2-3 million units. So the city is a huge market. Do not worry developed or underdeveloped cities, as long as the building of public facilities, you need to install the inspection covers, plastic covers mold manufacturers of value covers mold everywhere. Manhole acceptance criteria, composite covers national standard heavy-duty carrying only 240KN, which is 24 tons, and ductile iron manhole covers, CJ / T3012-93 national standards important bearing more than 21 tons of light and heavy to over 36 tons. That composite bearing heavy covers and ductile iron manhole covers bearing quite light. Ministry of Construction bearing 21 tons of ductile iron light covers is not permitted in the vehicle pass and parking place! State regulations on the use of city streets and covers more than 36 tons must be reached bearer, you may not use. Covers have acceptance criteria, you have need to make covers of covers mold is with a certain test, otherwise unqualified covers mold can not produce high quality composite covers mold. Plastic covers mold Quotes from Baoding Century country-die factory. Baoding Century country-die factory (www.kaiyuanguotong.com) strong, credible, in Baoding plastic building materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the country through the mold Kaiyuan into the brilliant and you work for a better future!