国产精品露脸脏话对白_手机毛片网_法国1997年的迷宫_天堂色影院_久久久成人影院_91精品国产自产老师啪

1- Material of steel :

Hight quality carbon steel,more thick than other supplier,after shot blasting ,smooth and strong enough,we usually use more thickness material than other supplier.

2- Weldment of frame : world technique

Welded together as a whole part,Stewing fire treatment after weldment.
(Carbon dioxide gas shielded welding,alloyed welding wire).
submerged arc welding, VSR treatment after weldment.

3- Heating way&precision temperature control:

Steam ,oil or Electric
Plate temperature tolerance: ±0.5°C

4- There are more advanced technical information as our core patents,and not showed in the description,please email us.