Selected quality assurance model should be appropriate and will not mislead the supply-side customers.

所選擇的質(zhì)量保證模式應(yīng)是適宜的国产区一区在线，并且不會(huì)誤導(dǎo)供方的顧客官网免费A片。

A chromium free conversion coating at least equivalent in corrosion protective quality to conventional chromate conversion coatings can be formed on metals, particularly cold rolled steel, by a dry-in-place aqueous acidic liquid comprising: a component of anions, each of said anions consisting of at least four fluorine atoms and at least one atom of an element selected from the group consisting of titanium, zirconium, hafnium, silicon, and boron, and, optionally, ionizable hydrogen atoms, and optionally, one or more oxygen atoms; a component of cations of elements selected from the group consisting of cobalt, magnesium, manganese, zinc, nickel, tin, zirconium, iron, and copper; the ratio of the total number of cations of this component to the total number of anions of component being at least 1:5; sufficient free acid to give the composition a pH in the range from 0.5 to 5.0; a component selected from the group consisting of phosphorus-containing inorganic oxyanions and phosphonate anions; and a component selected from the group consisting of water-soluble and water-dispersible organic polymers and polymer-forming resins and, preferably, also including a component selected from the group consisting of tungstate, molybdate, silicotungstate, and silicomolybdate anions.

通過對(duì)包含以下成分的含水酸性液體進(jìn)行干燥外国黄色视频九九，可以在金屬上形成無鉻的轉(zhuǎn)換涂層日本欧美自拍主播偷拍，該涂層與普通鉻酸鹽轉(zhuǎn)換涂層相比日韩欧美大陆私拍在线观看，至少在抗腐蝕質(zhì)量上等效：$_一種陰離子成分女人18毛片A毛片免费，所述各個(gè)陰離子包括至少4個(gè)氟原子欧美激情aaa，至少選自鈦、鋯国产精品性爱视频网、鉿欧美日韩在线视频一区二区、硅與硼元素中的1個(gè)原子。任選地可離解的氫原子亚洲国产综合精品一区青草，任選地1個(gè)或多個(gè)氧原子国产性在线；$_一種選自鈷、鎂国产免费精、錳www.欧洲视频在线观看、鋅、鎳嫩草影院黄妓女、錫色色人人、鋯、鐵與銅元素的陽離子成分久久国产精油按摩，上述成分的陽離子總數(shù)與成分內(nèi)的陰離子總數(shù)之比至少為1∶5男人强奸裸体老女人视频；$_足夠的游離酸以使該組合物的pH值在0.5～5.0的范圍內(nèi)；$_一種選自含磷的無機(jī)含氧陰離子與膦酸鹽陰離子的成分黄页三级；$一種選自水溶性與水可分散性有機(jī)聚合物與聚合物形成的樹脂的成分人妖色偷偷福利网站，優(yōu)選還包括一種選自鎢酸鹽、鉬酸鹽黄色网站啊啊嗯……、鎢硅酸鹽與鉬硅酸鹽陰離子的成分日本爱爱网站。

The factory has been selected quality oxygen-free copper wire and rod for Raw materials, production of the highest quality products.

本廠一直精選優(yōu)質(zhì)的鋼絲和無氧銅桿為原材料，生產(chǎn)最優(yōu)質(zhì)的產(chǎn)品国产一级黄片一区二区。

superior quality：優(yōu)等質(zhì)量

fair quality 尚好的質(zhì)量 | superior quality 優(yōu)等質(zhì)量 | selected quality 精選的質(zhì)量