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Anonymous users2024-01-24The chip hot pressing process is divided into two types according to the different shapes of the inner lead after compression: ball welding (ding head welding) and pin welding. Both types of soldering require heating the metal frame and hollow capillary of the soldered chip, respectively (the former.
It is estimated that it was designed and ordered by Germany, and small domestic and foreign trade companies placed orders for direct export to small domestic factories. Do foreign trade in your heart.
You can ignore him, or you can give the other person a reminder.
Camphor wood box furniture: wood is a porous material, can adsorb odor gas in the air, adjust indoor air humidity, plus camphor wood has a strong aroma, and the smell lasts, in the case of wood is not rotten, the aroma can be maintained for hundreds of years, which can be confirmed from the new facet of camphor wood cultural relics unearthed in many places in our country still exudes obvious aroma. >>>More
If it's not suitable, change it, and the school will find a teacher to talk to, and it's no problem to find it yourself, but now almost all have uniforms.
The development of night lights is inseparable from innovation, energy saving and multi-functionality will become a trend, and good industrial design is very important.