What's the scale of your factory? What's your monthly capacity?
Door hardware factory is 5500m3;
Bathroom Hardware factory is 3000m3;
The capacity difference comes from the different of product, data statistics in 2019 as:
Door hardware:35,000set Certificated items;50,000to70,000set standard item/month.
Bathroom Acc:20,000to30,000set regular item;2,500to3,000set Towel heater/month.