人人看人人摸网站_国产肏屄无码av_2024能在线观看的黄色网址_丝袜高跟麻豆_国产av性爱_啪啪啪啪片一区二区三区四区五区六区 _人妻在线啪啪_日本一级AAA_午夜操逼了_欧美风情在线操一区四区四区 _岛国动无码AV作片_嫩草发布页面_日本三级A片完整片_黄色在线观看网站av_www.51久久

In the late 60s of last century. the construction project of Toronto, Canada entered the peak period, the destruction of environmenta resources artificial gradually rise, a number of construction companies in trouble. How to solve the existing environment, reduce costs, improve efficiency, become an urgent problen facec by construction companies;

Aluma formwork company required urgen market developec by Aluminum Alloy template as the mair material template system, and obtained the unprecedented success, widely used in Hongkong anc Macao; China in more thar ter years ago has begun the use o Aluminum Alloy template, neighbouring Vietnam has started five years ago in the use ofAluminumAlloy template.

EVOLUTIONARY HISTORY OF BUILDING TEMPLATES

2010，the Ministry of housing and urban rural development,the Ministry of construction of the 10 out thatnew technologies (2010) clearly pointed aluminum alloyformwork isone ofthe focusofChina's newconstructiontechnology promotion.

The promotion of green construction is an important measure to implement the national strategy of sustainable development of construction industry, the national "green building action plan" and "the development of the construction industry" 12th Five- Year "plan" will clear the green building and energy- the saving emission reduction as focus of development.In  orderto achieve the goal ofreducing carbon emissions per unit of GDP by 40% in 2020 compared with 2005 in China,it is necessary to upgrade the production mode of the construction industry in.