2020 Tsim dej nyab tshiab

Khoom nta:

1. Qhov tseeb ntawm 2020, tuag-casting moulding sib xyaw ua ke tshav kub dissipation qauv, txhua-puag ncig tshav kub dissipation ncig, ntau dua.

2. Folding muab zais khawm khawm, txuag tau qhov chaw ntim khoom thiab txo tus nqi tsheb thauj mus los.

3. Muaj ntau yam ntawm lub lens thiab cov kev daws teeb meem substrate muaj rau kev teeb tsa hauv cov chaw sib txawv.

4. Ntau txoj kev installation, xws li teeb nruab phab ntsa, vertation sib xyaw, hoisting, thiab lwm yam.

Teeb Duab & piav qhia