欧美人与牲动交xxx,国产高清专区,卫生间被教官做好爽HH视频

NEWS

CONTACT US

Address:Pingtang Industrial District, Shipeng Village, Shishan Town, Nanhai District, Foshan City,
Phone:0757-81002668/0757-63323396
Fax:0757-81196682
Contact:Ben Zheng/13826981293 Kerry Lu/13751224830
E-mail:sbs@sbsprefabhouse.com
URL:http://www.lhp8.cn

Guangzhou Steel teach you: prestressed steel structure

Guangzhou Steel teach you: prestressed steel structure As a low-carbon green green building, steel structure construction should to build capital-saving, environment-friendly society to play a greater role. Judging from the current situation...

2015/8/5

Guangzhou Steel teach you: steel works, steel selection General rules

Guangzhou Steel teach you: steel works, steel selection General rules 1, steel orders, its variety, standard and functions should be in line with the existing national planning documents and steel specification given.2, steel purchase contract respo...

2015/8/5

Guangzhou Steel teach you: connection handling, processing and Steel Works conflict face pieces

Guangzhou Steel teach you: connection handling, processing and Steel Works conflict face pieces 1, the connector bolt hole according to relevant provisions of Chapter 8 of this specification for processing, precision bolt hole wall roughness appeara...

2015/8/1

Guangzhou Steel teach you: welding steel engineering practitioners general rules

Guangzhou Steel teach you: welding steel engineering practitioners general rules 1, welding technology (welding engineer) should have appropriate qualifications; large important steel works, welding technology leader should obtain the intermediate a...

2015/8/1

Guangzhou Steel teach you: hoisting steel construction zone safety of the general provisions

Guangzhou Steel teach you: hoisting steel construction zone safety of the general provisions 1, lifting the region should set the security cordon, non-staff prohibited from entering.2, lifting objects hanging from the ground 200mm ~ 300mm, should co...

2015/7/29

Guangzhou Steel teach you: installation of steel structures for connector inspection requirements

Guangzhou Steel teach you: installation of steel structures for connector inspection requirements High strength steel connection hexagon bolt connection deputy, torsional shear type high strength bolts, steel grid with high strength bolts, common bo...

2015/7/25

Guangzhou Steel News: Steel structure construction design elements and current situation in our country

Guangzhou Steel News: Steel structure construction design elements and current situation in our country Times are ongoing, and we work every day to live the life of the construction material requirements are also increasing. Modern iron and steel in...

2015/7/25

Guangzhou Steel News: laminated steel prefabricated building skills leading

Guangzhou Steel News: laminated steel prefabricated building skills leading Recently, the Hubei local standards "Steel laminated assembly building skills Regulations" (hereinafter referred to as "Regulations") approval. "Regulations" the prepa...

2015/7/25

Guangzhou Steel teach you: construction steel structure engineering control points

Guangzhou Steel teach you: construction steel structure engineering control points 1 steel construction in high strength bolt connection. Even the quality of high-strength bolts is an important factor affecting the quality of steel, high-strength bo...

2015/7/23

Guangzhou Steel tells you: Analysis of Steel carried prospects

Guangzhou Steel tells you: Analysis of Steel carried prospects Analysis carried out prospects SteelSteel undertaken: should focus on three main areasAccording to industry to carry out the situation to carry out offshore oil engineering equipment, st...

2015/7/23

Guangzhou Steel tells you: Management of Steel Construction Safety Control

Guangzhou Steel tells you: Management of Steel Construction Safety Control Along with the development of society, steel works from an economic, practical, seismic, may increasingly being recognized in the use and so on, followed with an incr...

2015/7/23

Guangzhou Steel News: China building China's first research and manufacture modular steel structure housing the main completed green

Guangzhou Steel News: China building China's first research and manufacture modular steel structure housing the main completed green Developed and manufactured by the China State Construction Engineering's "low level of green steel demonstration pro...

2015/7/15

page:25 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 pervious next

国产一级特黄aa大片在线-国产一级特黄aa大片免费-国产一级视频在线观看-国产一级视频久久-午夜影院免费体验-午夜影院免费入口