PPD kwụ n'ahịrị efere ebuli mmachi

Nkọwa dị mkpirikpi:

1.Suitable maka ibuli na ibufe ígwè ígwè, constructioand profiled mmanya na kehoraizin ọnọdụ.

2. Zenarị ịkwanye ma ọ bụ ịtụ ụjọ.

3. Oke ibu na-arụ ọrụ bụ ihe kachasị elu nke a na-enye clamps ikike t nkwado mgbe ejiri ya na ụzọ abụọ na-ebuli elu nke ogo 60.Ịkwalite arụmọrụ enwere ike iji ihe nkedo ahụ na ụzọ abụọ ma ọ bụ ọtụtụ.

4. Enwere ike ịgbanwe agba agba nke ahụ, nweekwa bọtịnụ satety.