INDUSTRIA BERRIAK

What is the reason why the aluminum profile is light and black when it is black at normal temperature? How to deal with it?

2019-05-05

Arrazoia:

1 beltza denboran profil laburraren oxidazioa, hondakinak zatietan;
2 solution acidity is low;
3 Soluzioaren konposizioa proportzionaletik kanpo dago.

Approach:
1 control the blackening time;
2 supplement concentrate;
3 Osagarri doikuntza osagai osagarriak.