Yongkang St. Chang Co. According to the survey, found that China has become the production and consumption of power security door. In particular, as the real estate market pull and urban residents growing awareness of protective steel door, pull the first round for the first time have the market door industry in our country, but the continuous improvement of people's living standards, the door of the art requirements are further reinforced steel door customization, produces stainless steel door on a timely manner to meet the continuing needs of this market. Door market in the country exceeded 300 billion yuan output value of the market, where stainless steel security door proportion accounted for nearly thirty percent of the future will continue to increase. Stainless steel security door has become the new darling of the market in stainless door handle, which is totally unique in its characteristics to decide. Yongkang St. Chang Co. in stainless steel anti-theft window manufacturing and sales. Our company has strong technical strength, superb production technology, a sound management system and quality testing. St. Chang Industry and Trade to introduce you to the stainless steel security doors must meet the following can be considered a qualified security doors: 4, stainless steel security doors installed, the user must first check the keys, insurance policies, invoices and service lists and other accessories Are parts and materials and materials with stainless steel security doors and other manufacturers to provide consistent, do not appear less of a key. When using the key to open the lock on the door has been installed, the cylinder should be easy and flexible, no catching phenomenon; doors open 90 degrees in the process, should be flexible and comfortable, without jamming stainless steel door supply, abnormal sound. Yongkang St. Chang Industry and Trade Co., Ltd. stainless steel security door exquisite craft, reliable quality, competitive price, welcome customers and friends to buy. Stainless steel door Supply | Yongkang steel doors | St. Chang Industry and Trade provided by the prestigious St. Chang Ltd. Yongkang. Yongkang St. Chang Ltd. (www.shengchangco.com/about/) strong, credible, Jinhua in Zhejiang housewares industry has accumulated a large inventory of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the St. Chang Industry and Trade into the brilliant and you work for a better future!