正規廠家是根據航空公司、軍事飛機制作廠所提供的圖紙生產模型，因此作出的模型比例更加真實，逼真。
Regular manufacturers produce models based on drawings provided by airlines and military aircraft manufacturers, making the proportions of the models more realistic and realistic.
而非正規廠家生產的模型產品未經航空公司、軍事飛機制作廠授權，往往是通過仿造正規廠家產品，或在網上搜集一些軍事飛機圖片生產而成，做出來的模型往往會比例失調，看起來不那么真實。
The model products produced by informal manufacturers without authorization from airlines or military aircraft manufacturers are often produced by imitating the products of legitimate manufacturers or collecting some military aircraft images online. The resulting models often have out of proportion and may not appear as realistic.
1、外表很容易變黃、褪色
1. The appearance is prone to yellowing and fading
一個正規的定制軍事飛機模型生產廠家，在模型生產中都會選用價錢較貴的高級涂料，因而生產出來的飛模型即使長時間存放也不容易出現變黃、退色等景象褪色等現象。而小型軍事飛機模型廠家生產出來的模型剛開始與大廠家生產出來看起來差別不大，然而半年到一年左右就會逐步變黃、褪色，因此就會有一些廠家把價錢壓得更低就有這方面的原因。
A regular manufacturer of customized military Model aircraft will use expensive advanced coatings in model production, so the produced aircraft model is not prone to yellowing, fading and other phenomena even if it is stored for a long time. However, the models produced by small military Model aircraft manufacturers seem to be similar to those produced by large manufacturers at the beginning. However, they will gradually turn yellow and fade from half a year to about a year, which is why some manufacturers will lower their prices.
2、機翼、發起機等部件容易斷裂、脫離
2. Components such as wings and initiators are prone to breakage and detachment
一些小的模型生產廠家以及非正規的生產企業受到生產工藝的限制，以及為了節約成本，選用較差的生產材料，更終生產出來模型的機翼、發起機等部件在運輸途中十分容易斷裂、脫離，特別是量少的情況下，快遞運輸中這種損失率有時甚至于高達70%以上。
Some small model manufacturers and informal production enterprises are limited by production processes and choose poor production materials to save costs. The wings, initiators, and other components of the final model are easily broken and detached during transportation, especially in small quantities. This loss rate can sometimes even reach over 70% in express transportation.
3、外表不光滑、雜質較多
3. The appearance is not smooth and there are many impurities
正規廠家做得好的軍事飛機模型都是采用樹脂類生產，很多工序必須要通過手工完成，而一些小廠家一味的為了節省成本，降低價格，尋求產量，缺少必要的質檢工序，成品模型做成以后，或多或少都會有一些存在瑕疵的產品，這十分影響產品的品質。對于模型經銷商來說，盡管進貨價錢可能相對較低，然而這樣高的瑕疵率不僅不能把銷售價錢降低，也使得模型銷售商處于一種惡性循環當中。
The military Model aircraft well made by regular manufacturers are all made of resins, and many processes must be completed manually. However, some small manufacturers are blindly trying to save costs, reduce prices, and seek output. They lack the necessary quality inspection processes. After the finished models are made, there will be more or less defective products, which will greatly affect the quality of the products. For model dealers, although the purchase price may be relatively low, such a high defect rate not only cannot lower the sales price, but also puts model sellers in a vicious cycle.
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